ELECTRICITY FAQ |
ALL ELECTRICITY ARTICLES
Comment book archive: 2006
Thank you for visiting SCIENCE MISCONCEPTIONS: ELECTRICITY. You can
add new questions to the list below.
Also check out the
other comment books for Science Hobbyist site
NO HOMEWORK QUESTIONS! No cheating. Do your own homework, don't
ask others to do your research.
NO SPAMMERS! Submitted entries are NOT posted here automatically.
They first are reviewed by the site owner. If you want to advertise on
the internet you should pay for it.
How does a polorization transformer work?
On a marine application of 220 shore power they eliminate the white neutral wire and are using the engine ground and the green gounding wire like normal. But on the schematic the white wire comes out of the Transformer to ground and then to the outlet..
They have no white grounded wire coming onto the boat.
Just the green grounding and one red and one black ungrounded hot wires.
How does it make the loop?
I thought the red and black both carried 120 volts and combined they made 220.
Now, I can split the load between the red and black as long as I run the white to each 110 plug.
But how is it that 220 only uses two hots and the grounded green wire?
dan <mrddownard asng msn dt com >
Milwaukie, Or USA - Sunday, December 24, 2006 at 01:14:13 (PST)
what is the voltage use in chennai domestic 230/220/ ac?
oriyantha <pwaidya asng yahoo dt com >
chennai, india - Saturday, December 23, 2006 at 19:35:04 (PST)
First of all thank you for a very interesting and informative site.
I am facilities manager putting together an intranet site for our company
on which I will be attempting to explain the workings of some basic
equipment, systems etc. I was hoping to include a section on electricity
in order for people to have a proper (if not perfect) grasp of the
subject. Having ingested a huge volume of information from the web I now
have a better idea in my own mind as to what electrcity may be however I
am having trouble coming up with a simple ending for the section that
people would be able to use if ever asked "what is electricity?"
What in your mind would be a reasonable summary of the phenomena commonly
described as "electricity." I understand that the expression is misleading
in many ways, however your average individual will need something short
and simple that they will understand and absorb. As I said I have scoured
the web and found nothing concrete and your site leads me to believe that
if anyone is able to come up with something it's likely to be you.
Hope you can help.
Brian Jackson <briandj26 asng hotmail dt com >
London, England - Monday, December 18, 2006 at 06:30:02 (PST)
I was removing a circuit board from a garage door opener motor and forgot to unplug the opener from the 110 outlet first. When I touched the circuit board my hand was thrown back, but fortunatly I was not thrown off the ladder. I beleive these motors are only 24 volts and it was just a cicuit board. Why was I shocked and how bad could I have been injured.
Paul Falletta <fallettap asng cox dt net >
Santee, Ca USA - Friday, December 15, 2006 at 12:51:36 (PST)
Can ice conduct electricity?
Michael LaReau <scoop60914 asng aol dt com >
Bourbonnais, IL USA - Wednesday, December 13, 2006 at 01:33:05 (PST)
Whenever I am in a certain part of town, I can always here a high-pitched sound. It happens to be near an electric power plant. Could it possibly be that? Just wondering if you can "hear" electricity.
Julie <diamondjul asng gmail dt com >
Salina, KS USA - Tuesday, December 12, 2006 at 17:02:54 (PST)
will the life time of a battery be minimum , if there is no resistor in the circut ? and if there is one resistor then what will be the effect on battery life time ? if there are two resistors , connected in series , then what will be the effect , and if they r connected in parallel then what will be the effect? ,, also explain the intensity of light in each case ,, and compare it .
bilal <b_s8888 asng yahoo dt com >
lahore, punjab pakistan - Tuesday, December 12, 2006 at 02:43:35 (PST)
Wasn't someone invented a way to transfer electricity without wire? What is the theory behind that? Who Invented that?
Isaac <fokisaac asng yahoo dt com >
USA - Thursday, December 07, 2006 at 21:07:32 (PST)
how could i use batteries to make a shocking devise..3 to 5 volts
tom miller <bertom_2 asng yahoo dt com >
oh USA - Thursday, December 07, 2006 at 14:47:20 (PST)
I have a question about watches. My battery operated watch runs fine if it's sitting on the dresser, but when I wear it, it loses time. What is it about my body that throws the watch off? I have tried several watches, and have the same problem. It's me! Someone said it's an electrical thing.
Linda <Lin812 asng aol dt com >
Lakeview, AR USA - Tuesday, December 05, 2006 at 19:32:00 (PST)
Question: What do we mean when we say we are applying Zero volt, positive volt or negative volt? Can you please explain in terms of charge flow for a metal conductor.
Arjun <((((arjun_1004 asng hotmail dt com a123>
fairfax, va USA - Tuesday, December 05, 2006 at 18:55:40 (PST)
What do we call an electric current that doesn't move?
michel <jdjmfallen asng juno dt com >
t.r., n.j USA - Friday, December 01, 2006 at 16:01:33 (PST)
Why does a DC current give off a spark when the circut is turned off?
andy morganelli <andymorganelli65 asng hotmail dt com >
boston, ma USA - Thursday, November 30, 2006 at 13:42:04 (PST)
I want to run four 60w light bulbs from a 24v battery brick. What do I need to purchase other than the bulbs and battery to make this work?
Aaron Boucher <a.boucher asng ramsa dt com >
New York, NY USA - Thursday, November 30, 2006 at 11:40:22 (PST)
I thought your site was very good, does a lot of explaining about voltage, which i have always been curious about. However, could you please clarify how different voltages occur. You talk about "high voltages" caused by scuffing feet on carpet or rubbing baloons, but why are the electric fields from these so much stronger than a battery, say.
Also, and more unknown to me: could you please explain how batteries of 1.5 volts ( or any value) can add together in series to give a much larger electric field strength, as the field is still between 2 same sources (+ve of one battery, -ve of the other) and should not logically be affected by having another battery exactly the same in series with it?
Peter <lazyboy13?/at\? _gmail_ dt commm>
Nelson, NZ - Wednesday, November 29, 2006 at 23:55:01 (PST)
It was explained to one time that AC voltage travels through a conductor and DC voltage travels on the surface. For VDC that is why stranded wire is used, vice versa VAC uses solid conducter until using higher voltages. Could you explain further and have I been misinformed? Thank you.
John Stahlnecker <jstahlnecker asng tricoequipment dt com >
Pasadena, MD USA - Wednesday, November 29, 2006 at 18:13:00 (PST)
ok try this one: every year we do the boat up with Christmas lights and special effects for the annual parade. We are always on the edge of all the generators we pile on the boat and resetting breakers is always par for the course. Can we gain any advantage by using the 240 outputs and stepping down the voltage to 110?
Sample: 6kw generator (volts-110/240 current-41.5/20) breakers around 20amps.
tom leyen <t.leyen asng uscommlink dt com >
d bay, ca USA - Tuesday, November 28, 2006 at 18:08:18 (PST)
how do you know that electricity is not an energy? i read about how you say that there is energy and electricity are in the wires. But how do you know that some of the electricity in the wire isn't being used to to make the light in the ligh bulb and the rest of the electricity isn't travel to the panel and then to ground.
st j, NH USA - Tuesday, November 28, 2006 at 16:35:20 (PST)
I have done an extensive google search for this question without result. I have several power tools that I brought from a 220vac/50Hz country and I am now resident in the USA. In order to run these off 110vac/60Hz I know that I can purchase step-up transformers - but. Is it possible rather to modify the motors internally to run off 110v/60Hz? I am capable of stripping down a motor to make the mod. My biggest motor drives a multi-tool for woodworking and has these specs: 1HP Asynchron M. 230/230 Volt. 0,37/0,51 KW. 1380/2160 U/Min. 3,6/3,3A. 50Hz. Can it be modified? The other motors are smaller power handtools - eg: Grinder asng 400Watts. Circular Saw asng 500Watts. etc. Any guidance as to the possibilities of avoiding buying a large transformer will be hugely appreciated.
robb hinds <aremac05 asng hotmail dt com >
Isle of Palms, SC USA - Tuesday, November 21, 2006 at 13:08:06 (PST)
What does it mean to transform electricity?
Geoff <www.googlemail dt com >
Vancouver, Canada - Monday, November 20, 2006 at 17:07:20 (PST)
How does lightning kill people.
Aneta <anetka96 asng poczta.onet.pl>
Palos Hills, Il USA - Friday, November 17, 2006 at 05:49:33 (PST)
how is elctricity transmisiion achived by direct current (DC) and what are the advantages and disadvantages of this tecnology
felix ter <felixter26 asng yahoo dt com >
hangzhou, zheijhian USA - Tuesday, November 14, 2006 at 20:45:37 (PST)
Can static electricity travel through water while washing your hair?
Brandy <brndykdng asng yahoo dt com ...........>
Abilene, tx USA - Thursday, November 09, 2006 at 10:17:49 (PST)
Hello, I need information on how to get ac 220v from a triphasic system. Triphase current system has 3 lines a neutral and a ground. Can I just connect two of the lines with a neutral and a ground to operate a 220v saw ?. Please reply to tfernandez_marcos asng yahoo dt com
Tomas <tfernandez_marcos asng yahoo dt com >
Lauderhill, FL. USA - Thursday, November 02, 2006 at 17:32:10 (PST)
My question stems from using an RV (receational vehicle). Many RV's are wired for 30 amp service so many parks have 30 amp posts. There are more and more RV's however that require 50 amp service, (Prevost busses, class A coaches etc) and subsequently more parks are replacing their 30 amp posts with 50 amp posts. If i plug my 30 amp coach up to 50 amp post using an adapter, what amperage will be coming into my coach? Is there anything that could damage my electronics or shore power cord? Is this a dangerous situation???
Mike Hamlett <Mikehamlett asng nc.rr dt com >
Durham, nc USA - Thursday, November 02, 2006 at 09:43:19 (PST)
When buying a UPS why would you need to be aware of the line conditioning the UPS provides?
joe smcho <kepsple asng yahoo dt com >
newyork, ny USA - Tuesday, October 31, 2006 at 08:12:41 (PST)
I am replacing an old wall heater in a bedroom...there are two black wires and one ground wire...each black wire reads 120V AC from ground with a digital multimeter..isn't there supposed to be a neutral wire? is one of these the neutral wire?...is this 240V?...
Joseph MacPherson <sgtmacone asng yahoo dt com >
Whittier, CA USA - Tuesday, October 24, 2006 at 17:57:36 (PDT)
I am installing a new wall heater. the old ones were rated 208/240V...I have two lines coming into the room with one ground wire..each line reads 120V with relation to ground...does this mean it is 240V?..and if so why is there no neutral wire?...
Joseph MacPherson <sgtmacone asng yahoo dt com >
Whittier, CA USA - Tuesday, October 24, 2006 at 17:09:09 (PDT)
in most cases does electricity create magnets or do magnets create electricity?explain
lakisha leonard <nsleonard asng aol dt com >
donalsonville, ga USA - Sunday, October 22, 2006 at 20:54:46 (PDT)
Can you take a regular wall plugin and wire it to a car battery.
Tyler <Rac1ng101 asng aol dt com >
lexington, AL USA - Tuesday, October 17, 2006 at 15:35:28 (PDT)
How can Tap Changer of a Transformer change with the load? i.e How to drive a mathematical formula relates tap position of a transformer to its load?
Ihab A. Ibrahim <ehab_ibraheem asng yahoo dt com >
Abu Dhabi, Abu Dhabi UAE - Monday, October 16, 2006 at 23:10:39 (PDT)
I have solar panel, 15 watts 23 volts open circuit. What can I expect to get out of it (in BTU's)if I use the voltage for heating (heating element in container of water or sand).
Bruce Cornwell <bcornwell asng fpm.wisc dt edu >
Middleton, WI USA - Monday, October 16, 2006 at 11:58:58 (PDT)
This site is really fentastic. Which is more dangerous,ac or dc?
sajeesh.s <sajeesh31 asng yahoo dt com >
cochin, kerala india - Monday, October 16, 2006 at 06:25:35 (PDT)
I have a back-up power source for my office.The battery states it must be plugged directly into a wall outlet,can I use an extension cord to connect them?
John <grimes921 asng comcast dt net >
river forest, il USA - Thursday, October 12, 2006 at 22:08:35 (PDT)
Can you please tell me how I calculate how many reverse cycle air conditioners I can have on my house and what size they can be?
Brett <bertalli asng yahoo dt com >
Mildura, vic Australia - Wednesday, October 11, 2006 at 20:53:24 (PDT)
is there an equation for finding out how long a battery (particularly a 12 volt car battery) will be able to provide power to a fan that i have. i'm hooking it up through an inverter.
jake <jake_711 atsgn hotmail dot com>
USA - Wednesday, October 11, 2006 at 19:34:28 (PDT)
House wiring is not in series can you explain why one light does not effect the others !!!
UK - Wednesday, October 11, 2006 at 10:49:13 (PDT)
How can a potato light a light bulb? How dose it have energy to do such a thing?
susana r <susanaivette29 asng yahoo dt com >
el paso, tx USA - Monday, October 09, 2006 at 22:45:28 (PDT)
I wanted to know when electricity went from 25 cycle to 60 or 65 cycle? Thanks
arva manjarres <admanjarres asng hotmail dt com >
casa grande, az USA - Monday, October 09, 2006 at 14:00:20 (PDT)
I wante to know when electricity went for 25 cycle to 60 or 65 cycle? Thanks
arva manjarres <admanjarres asng hotmail dt com >
casa grande, az USA - Monday, October 09, 2006 at 13:59:17 (PDT)
How are lightbulbs made, and what is used?
How are heat and light related?
USA - Monday, October 09, 2006 at 08:26:04 (PDT)
I plan to assemble led light clusters to replace the auto type bulbs
in the lamps of my sailboat. Using series leds in parallel with current
regulation (LM317). Would like to add a diode to prevent a reverse
current. Don't know how to choose the correct type of diode. Would
appreciate any advice.
gene <gene asng kppunet dt net >
ketchikan, ak USA - Wednesday, October 04, 2006 at 20:38:08 (PDT)
Please answer privately if you know this answer. I was electrocuted by high voltage from a power line arcing over to me and pulling me under the crane that I was standing near. I was not leaning on the crane! I need any articles or information you may have that can help me prove that electricity can arc and pull a person into it.
Jim Wilson <jcisnear asng yahoo dt com >
jacksonville, fl USA - Wednesday, October 04, 2006 at 09:53:14 (PDT)
How many milliamps does a 1.5 volt D-cell battery put out
Tom <tkapcsos asng francis dt edu >
loretto, pa USA - Wednesday, October 04, 2006 at 08:40:18 (PDT)
why electrical field inside a conductor should be zero
piratla <vln_piratla asng rediffmail dt com >
rajahmundry, a.p. india - Tuesday, October 03, 2006 at 02:56:04 (PDT)
I have a Makita 6040D electric drill which used to run on batteries but I now want to run it off mains power. (In New Zealand we have 230 volts main power.) What transformer DC voltage and amps will I need. On the drill is written 4.8V then a broken line under a solid line, then No450/min. Thank You very much.
Ian Bayliss <ianandliz asng clear dt net .nz>
New Zealand - Friday, September 15, 2006 at 23:03:42 (PDT)
If a 1000W generator is hooked up to an appliance rated as 500W. Will the generator use half the fuel than if hooked up to an appliance rated at 1000W?
Karl Wrigley <karl.wrigley asng hsntech dt com >
Sydney, NSW Australia - Thursday, September 14, 2006 at 16:08:31 (PDT)
Can u please tell me how to calculate the required turns of the wire, Magnetix flux required etc for a 100V 10Amp alernator.
Sreekanth <sga_family asng yahoo dt com >
Bangalore, KA India - Tuesday, September 12, 2006 at 12:02:29 (PDT)
Great site! I am a mechanical engineer who got very limited electrical instruction at school, and your site has made my understanding considerably less fuzzy :)
I would be very interested in your explanation of 3-phase power -- Why is it used for transmission? What are its advantages? How can the different phases be used separately/together to obtain different voltages?
Keep up the good work!
USA - Monday, September 11, 2006 at 11:02:27 (PDT)
do light and radio waves always at "the speed of light"
al <cokiemonstergrl67 asng yahoo dt com >
chicago, iIlnois USA - Wednesday, September 06, 2006 at 14:04:55 (PDT)
I was wathcing a show on floods yesterday and lightning was striking the water, now my question is how far will an electical charge travel outward( not downward). REason being is how far away do you have to be from the point of entry in order to not get electricuted.
If you could answer that thouroghly i would greatly appreciate it.
Melissa <mel010102 asng yahoo dt com >
WA USA - Thursday, August 31, 2006 at 17:02:24 (PDT)
I am trying to find out the cause of two small burns that have
occurred in our carpet floor. The burns which are about 4mm round and
20mm respectively were separated by 40mm. A phone cord was lying over the
burn marks and touching the larger of the burn marks. The phone cable has
a melted section about 10mm long in the location of the large burn mark
although the melted section does not go all of the way through the
Approximately 100mm from the large burn mark was our Sony laptop computer
(less than 1 year old) the computer was turned off but the power cable
was plugged in to the opposite site, and the power was on (i.e. the
computer was charging). The side of the computer closest to the burns was
the side with the modem phone plug, the phone cord in question was
unplugged from the computer but within 50mm of the plug.
The laptop remains operational, with no apparent ill effects or exit burn
The house phone line remains operational.
We have not checked the phone extension cable to determine if operational.
When discovered (up to 9hours after incident? As at work) neither the
phone line or computer were hot.
Do you have any explanation how this could have occurred?
Is it possible for the laptop to build up static electricity which is
then discharged as an arc of electricity into the phone line as an earth?
All this without damaging the laptop or phone line?
Is it possible for the unplugged phone cord to cause a burn/fire by
Phil Ware <phillip_ware asng hotmail dt com ------------------->
USA - Thursday, August 31, 2006 at 03:17:27 (PDT)
why do we take a positive test charge to measure electric potential
when actually electrons are moving in a conductor as positive charge can
sarita sukumaran <sukumaran_sarita asng yahoo.com>
ahmedabad, gujarat india - Monday, August 28, 2006 at 06:03:13 (PDT)
Why is wasting electricity a bad thing? I mean i have been told constantly to turn out the light and i want to know why..
samantha lynn <somechicnamedloz asng yahoo dt com >
warminster, pa USA - Sunday, August 27, 2006 at 18:40:08 (PDT)
I am wondering if a person being shocked by a stun gun can transfer the current to the user by grabing them thus allowing the current to travel back into the person with the gun? If this can happen is the charge and jolt the same in both individuals? I heard of a person who bit another while being stunned and both were jolted equally. thanks for your assistance.
Brent <blrichards asng repmasters dt com >
USA - Friday, August 25, 2006 at 22:02:25 (PDT)
Hi I am in 8th grade and i have been thinking about this...
If you cool some sort of material(i dont know what it is)to below -364 degrees F you can put it above a track of magnets and it will levitate until it gets above -364,If you make a circle of magnet the supercooled material goes in a circle. I know that there is some law that a machine that goes forever is impossible because of friction,but if you put that circle of tracks in a vacumm and put it on some planet that has a temperature below -364(Pluto has one of about -378 to -369) wouldnt go forever because there is no friction?
Ricky <macewinduawsome asng aim dt com m>
Valencia, CA USA - Friday, August 25, 2006 at 15:27:00 (PDT)
Are all GFIs able to be used on an outside deck, or are thy specified for their use?
Greg <dgseptaric asng centurytel dt net >
Lorain, Oh USA - Monday, August 14, 2006 at 14:40:42 (PDT)
I was wondering as to how i would be able to convert vots to watts without knnowing the amps..
Megan <enigma2005_abc asng yahoo dt com >
Athens, oh USA - Thursday, August 10, 2006 at 12:50:06 (PDT)
I also have an interesting point about electric motors and generators. Has anyone put an electric motor and generator on the same axle and wired them together? Why can't one be used to power the other? Would the amount of of current converted by the the motor be greater than or less than the current converted by the generator? Would such a michine strengthen a current or weaken it? If the machine could ultimately increase the strength of a current, couldn't you use a component like a thermistor or voltmeter to control the strength of the current, and potentially use such a setup to produce vast amounts of energy or power homes and other buildings? I'm just wondering if anyone has tried this before. Thanks for your time. I appriciate it.
Old Bridge, NJ USA - Saturday, July 29, 2006 at 22:52:31 (PDT)
I have a few questions about electric circuits. First of all,(Excuse me if I missed this in your articles) in a simple circuit, say a battery and a lightbulb, electricity would flow from the positive and negative terminals of the battery to the lightbulb, which would convert the electricity into heat and light energy, right? Why can't the battery "pump" energy from just one terminal to the lightbulb to produce heat and light? What is the benefit to having a complete circuit? Is a complete circuit REALLY nesscecary, and if so, why? Also, in a car battery, the positive terminal is connected to the components involved in the starter and accessories, while the negative terminal is connected to the car's body. How can the car start if a complete circuit is not formed? Why is the negative terminal connected to the body? Does it "ground" the battery or the car? If so, why isn't the negative terminal on all batteries used to ground them? Why is another wire needed? I've been looking everywhere for answers to these questions, and I'm hoping you can help.
OId Bridge, NJ USA - Saturday, July 29, 2006 at 22:34:34 (PDT)
on a capcitor i have it states it is 6800uF at a rating of 80WV what is does "WV" stand for is it as i think wattvolts if so how do you convert this to volts to get the rating in volts like any normal capcitor thats states a working voltage of say 63V as i need to replace this due to damage and i cannot find any replacements that give this info.
peter <m1dgq asng removeme onetel dt com >
reading, uk - Friday, July 28, 2006 at 03:31:37 (PDT)
You say on your website electricity cannot be more then one thing, but
what if electricity was one thing, and everything else was simply an
effect, which makes people confused to what it is, confusing the effect
and electricity from eachother.
For example, the way a fluroescent light works, its not the
electricity you see, it's the reaction electricity has on the gas in the
I am not trying to take the fun out of the statements on your
website, I am just wanting to hear a second opinion on what I have just
Stephen Cameron <stevecam asng gmail dt com >
Melbourne, Victoria Australia - Wednesday, July 26, 2006 at 22:30:04 (PDT)
I live in a basement apt. and I leave my outside light on 24/7. My landlord is giving me grief because he doesn't want me to leave it on all the time. I do so I don't forget when I go out and arrive home late. Does it cost a lot in electricity to leave it on all the time or is he right that I should get in the habit of only putting it on when I go out? Thank you
maureen <mosie1234m asng aol dt com >
saugus, ma USA - Saturday, July 08, 2006 at 08:34:15 (PDT)
Everytime I turn on my swamp cooler I see a green spark come from behind the toggle switch. What causes this and should I be concerned?
Parker Heisey <parker.heisey asng sierra.army.mil>
Herlong , ca USA - Friday, June 30, 2006 at 10:50:52 (PDT)
How is it possible to transmit two different voltages of different magnituide and different frequiences(AC supply) in a same wire. if yes, will there be two electron flows in the same conductor.
daya <daya.mercy asng gmail dt com >
palavakkam, india - Tuesday, June 27, 2006 at 06:33:52 (PDT)
How do acids in batteries make the electricity?
Lydia <hicklin asng xtra.co.nz>
New Zealand - Monday, June 19, 2006 at 22:38:11 (PDT)
Why donít underwater electric arc welders get shocked?
Norm <nhieger asng aol dt com #####>
Fresno, CA USA - Saturday, June 10, 2006 at 14:44:37 (PDT)
what means of HV\MV
Nizamuddin <shaid_nizam asng yahoo dt com >
karachi, sindth Pakistan - Saturday, June 10, 2006 at 08:26:39 (PDT)
im a 14 year-old student and im currently working on a
annual compulsory project to invent aomething of your choice. My group has
decided to invent a 'portable socket'. This socket we plan to try and
create will be powered by batteries and enables the user to plug their
electrical appliances into it at anywhere and any point of time.
However, this idea seems pretty far-fetched- (It can't be that easy
to just connect the plug with batteries and wires, can it?)
I would really like to hear your views on this matter. Do you think
its feasible? What problems would we occur and how can we solve them?
I'm sorry I'm being very long-winded. Your reply will be greatly
rachel <rachelchng_ asng hotmail dt com >
USA - Wednesday, May 31, 2006 at 08:18:52 (PDT)
My parents live in India, and the Electric Bill is Very High out there. They use 220 Volts in India. In USA we use 110 Volts. I was just thinking that if I change the entire system in my house in India, from the main circut. That is put the entire supply in the house at 110 volts from the main circut breaker, and then use all American Appliance in the house, Will my Parents have half the electrical bill. Or instead of having 3 Phase supply, try to get just one Phase and have that at 110 Volts, will I be able to cut down on the electric cost?
Sunil Srivastava <honkla asng verizon dt net >
Philadelphia, PA USA - Tuesday, May 30, 2006 at 13:55:34 (PDT)
Who dicovered electricity and why?
When was electricity noticed?
Why does electricity exist and why was it discovered at that time?
Where does electricity come from?
What is the meaning of electricity?
What does it really meaan?
Hysstdrf Tredders <rettreathered23 asng aol.com>
Las Vegas, NV USA - Tuesday, May 30, 2006 at 12:12:58 (PDT)
Does it take alot of electricity to leave ceiling fans on? My husband leaves lights on, but insists that leaving fans on uses more electicity. Could you please clear this up. Thank you.
Karen Schwartzenburg <mschwartzenburg asng hotmail dt com >
Napoleonville, LA USA - Tuesday, May 30, 2006 at 05:48:40 (PDT)
well can any one guide me for megnetic electri genrators
i have some details wisht ot know pls. contact me
designers _ call atrate yahoo dot com
designers_call atrate hotmail dot com
parag <designers_call asng yahoo dt com >
guj india - Monday, May 29, 2006 at 02:01:18 (PDT)
It may looks as homework, but believe, it isn't. I'm reading book, which have a example ( but not answers )of simple diagram with resistor in series with open, single pole, single throw (SPST) switch and 24V DC battery. There are 2 "problems":
- switch open, what will be the voltage across switch & resistor
- switch closed.
I'm confused, as the book have a possibilities for both situations:
0 & 24; 24 & 24; 24 & 0; 12 & 12.
But how there could be any voltage in case of switch open? Doesn't have to any circuit closed to make any measurement?
Thanks for clarification & answers.
Richard <rici22S asng netscape dt net *>
Oakville, - Saturday, May 27, 2006 at 07:48:42 (PDT)
GREAT SITE WHY DONT BIRDS GET ELECTRICUTED
MARK <MARKIEMC12 asng HOTMAIL.COM>
PRESTON, LANCS ENGLAND - Monday, May 15, 2006 at 12:18:59 (PDT)
Why do batteries get hot?
Billy <gumballs94 asng yahoo dt com >
USA - Sunday, May 14, 2006 at 07:52:03 (PDT)
Can clarify my confusion on AC current, well in AC the electrical
charges move back and forth in the 2 wire so in single phase system 1
wire is grounded and name neutral. So does this mean that electrical
charges flow from the hot wire to neutral? Why is it there is no voltage
in the neutral wire?
azad <bea4671 asng yahoo dt com >
nilai, malaysia - Thursday, May 11, 2006 at 19:03:09 (PDT)
Who first discovered electricity? Why was it called electricity?
Hilo, HI USA - Tuesday, May 09, 2006 at 23:00:00 (PDT)
How many volts does it take to shock your skin
sam cook <www.samcook asng yahoo.com>
Roberta, Ga USA - Monday, May 08, 2006 at 16:32:20 (PDT)
what would make a light bulb blow out every two days my light bulds
blow every two days
mike martin <mikemartinfence asng sbcglobal dt net >
dallas, tx USA - Saturday, May 06, 2006 at 20:40:25 (PDT)
I AM REALLY FACING PROBLEMS IN IDENTIFYING SERIES AND PARALLEL COMBINATIONS IN RESISTANCE. SO, CAN YOU PLEASE SEND RELATED ARTICLE ON MY ID.
MANISH <manish_386167 asng yahoo dt com >
VARANASI, U.P INDIA - Saturday, May 06, 2006 at 07:14:21 (PDT)
Regarding your explanation about electrical energy transfer in "Where
does EM energy flow in the circuit",I have one question about magnetic
In that simple(?) circuit,seems to me that we only need electric
field and the "charge pump" in order to transfer energy from source to
load.Both are provided by the battery.
The electric field will "drive the charge against the resisting force of electrical friction" and the heat is produced.The charge is then pumped back to it initial state and the process repeated..am I right?
What is the role of magnetic field here?
Maguro <mohamad.hashim asng hp dt com >
Malaysia - Saturday, May 06, 2006 at 06:19:35 (PDT)
CAN YOU TELL ME WHAT IS THE AC INDUCTION LIMIT IS AT A 12V BATTERY..... ANOTHER ONE, IN GROUNDING, POINT 'A' READS 3 AND POINT 'B'IS 6 OHMS. THE DISTANCE BETWEEN 'A'& ''B' IS 75FT WHERE IS THE FAULT OR BREAK THANK YOU
SEAN HIGGINS <SHIGGINSaHOMEXPRESSWAY dt net >
USA - Tuesday, May 02, 2006 at 03:59:41 (PDT)
Given the electromagnetic force involves an inverse square law (square of distance), why don't electrons in a wire accelerate toward the positive terminal of the voltage source, rather than flowing at a constant rate?
Karl <karl.wrigley asng hsntech dt com >
USA - Saturday, April 29, 2006 at 07:56:36 (PDT)
Why does electrcity flow?
helen <helencwq asng hotmail dt com >
Surrey, Canada - Monday, April 24, 2006 at 19:05:10 (PDT)
Can you explain why the resistivity (Rho) of one element is less than another? Is it because there is more movable charge, or is it more to do with the atomic structure offering less impedence to the flow of charge, or both?
Karl <karl.wrigley asng hsntech dt com >
Sydney, NSW Australia - Friday, April 14, 2006 at 17:42:28 (PDT)
How can I build a simple circuit using a photoelectric switch. I want to make a lightbulb switch on when someone comes close.
Please remove the first "z" in my email address.
Qi Tang <kazzazp asng yahoo dt com .hk>
USA - Wednesday, April 12, 2006 at 02:14:48 (PDT)
Leyden jars I have made seem to produce powerful (loud/bright) sparks when discharged but the sparks are not very long. What factors affect the length of a spark and how are they different to factors affecting capacitance?
Karl <dakw asng tpg dt com .au>
Sydney, Australia - Sunday, April 09, 2006 at 03:33:36 (PDT)
Who dicovered current electricity?
sandra <eustaciaangel asng yahoo dt com >
sandieago, ca USA - Thursday, April 06, 2006 at 17:57:31 (PDT)
Why do most lights "burn out" when they are first switched on?
Peeradon <thanuvivek asng hotmail dt com >
Canada - Thursday, April 06, 2006 at 07:05:11 (PDT)
how many volts of electricity in a bolt of lightening please?
Duncan <simbur75 asng bigpond dt net .au.jeevs25>
deniliquin, nsw australia - Tuesday, April 04, 2006 at 01:54:34 (PDT)
Why is it that some things can conduct static electricity but they don't conduct electricity, such as a plastic rod? If you rub the plastic rod on a cloth and put it over someone's hair, the hair is attracted to it. However, the plastic rod doesn't conduct electricity - it can't complete a circuit.
ccfrizzy <ccfrizzy asng gmail dt com >
Princeton, NJ USA - Monday, April 03, 2006 at 15:55:50 (PDT)
Is it okey if a certain amount of current passes through the neutral wire which is almost equivalent to the current passing through the hot wires? Our office is supplied by a three phase supply (380/220 volts) and as i inspect it, using clamp meter on the neutral wire it register the same amount of current passing through the hot wire. Is the system correct? please advice...
Martin jason <mjonal asng yahoo dt com >
USA - Monday, April 03, 2006 at 05:51:43 (PDT)
Please advice how I can build a simple battery out of salt solution to light up a light bulb?
I read somewhere before that if I insert a zinc electrode and a copper electrode into a container of salt solution, I can light up a small bulb connected to the two electrodes. Is it true?
Do I need to get pure copper and zinc as electrodes?
Jimmy Tan <jimmytan asng ieee.org>
Singapore - Saturday, April 01, 2006 at 22:17:52 (PST)
Resistance in thin wires is often likened to water flowing in pipes, whereby there is more friction. Isn't this backwards? Am I on the right track in turning it around by thinking that a thick wire has LESS resistance because it has more charges per cross-sectional area than a thin wire that flow when voltage is applied, and thus a larger current is generated?
Karl <karl.wrigley asng hsntech dt com .au>
Australia - Saturday, April 01, 2006 at 18:37:10 (PST)
When you increase voltage does it increase amperage, and if you increase amperage will it increase the voltage. I always find it hard to understand if increasing amperage at the same voltage will burn something out. Thank you
ALEX RODRIGUEZ <175726 asng gmail dt com >
CHICAGO, IL USA - Friday, March 31, 2006 at 18:34:38 (PST)
I like your explanations, they are curing a problem of bad education from my undergraduate classes. I always try to answer something with an intuitive feel and can't stand a math only basis for an explanation.
So here's my question. How do you explain an antenna? I imagine someone turning up the frequency on a fixed antenna until, magically almost, the energy starts migrating off of it. I know this visualization is wrong. How would you explain it?
Thanks in advance,
Mike Stout <michaelpstout asng yahoo dt com >
Portland, OR USA - Thursday, March 30, 2006 at 17:22:56 (PST)
how does charge flow from a battery through a light bulb?
jessica bolen <jessica_loves_adam_4ever asng yahoo dt com >
kimball, wv USA - Thursday, March 30, 2006 at 06:36:07 (PST)
What happens if I connect a 1500W 230V/50 cycles motor to a 230V/60 cycles energy supply?
Klaus von Arnim <kvarnim asng reguma dt com >
BogotŠ, Colombia - Wednesday, March 29, 2006 at 04:18:43 (PST)
How there is wireless link between a transmitter and receiver?
raghav sareen <raghav_sareen asng yahoo dt com >
ferozepur, punjab INDIA - Tuesday, March 28, 2006 at 05:34:08 (PST)
This may sound like a stupid question. Buttt. What would happen if you had a bike frame that would spin a sprocket and that sprocket would be hooked to a bar that had 3 sprockets on it and that would be hooked to a bar with 6 sprockets on it. At the end of you would have six spinning sprockets. What if all 6 of these were connected to a 6 SMALL electric producing turbines? Then those 6 turbines would feed a battery.
My thought would be to have several of these set up all producing to a large battery for electric use.
Is this possible??
USA - Saturday, March 25, 2006 at 17:49:57 (PST)
USA - Saturday, March 25, 2006 at 10:50:32 (PST)
USA - Saturday, March 25, 2006 at 10:49:39 (PST)
why abird sit on a hugh power sapply don`t fil ill?
aykbie asng yahoo dt com .
ayichew <aykbie asng yahoo.com>
addis ababa, africa ethiopia - Wednesday, March 22, 2006 at 04:27:04 (PST)
Connect 2 wires to the terminals of a battery but leave the circuit open (suppose there is a few inches air gap between the ends of the wires). The voltage of the battery is now present between the ends of the wires (across the air gap). Does this mean that the charges in the wires have begun to respond to the e-field produced by the battery, but can only do so for an instant since it is not a closed loop?
Karl <karl.wrigley asng hsntech dt com >
Australia - Sunday, March 19, 2006 at 13:19:19 (PST)
What is the difference between conductors and insulators
Gladys Stevenson <Gsteve5122 asng aol dt com >
Richmond Hill, ny USA - Sunday, March 19, 2006 at 11:29:59 (PST)
How are electrical inputs structured so the devices they power get the proper amount of amps and volts from their power source? What if power requirements vary in different operations? How do adapters work?
My questions stem from a particular issue I am having. Specifically, my device (a computer cooling fan) operates (so say the specs) at 210 mA, but appears to input 500 (when plugged normally into the USB port) at DC 5V, but I want to use a 1A DC 5V wall socket adapter and save my port for other things, so will the fan get too many amps? Or would it merely not draw the extra capacity? I.e. are the extra 500 mA's "unused surplus," or "extra juice" that's going to burn my fan out? I hope my terms and usage are correct enough for this to make sense.
Danny Murry <cdmurry asng hotmail dt com *XYZ345aeiou*>
Laurel, MD USA - Saturday, March 18, 2006 at 17:05:08 (PST)
If power is a flow of electrical energy, what does the energy look like when it's not flowing?
Karl <karl.wrigley asng hsntech dt com >
Australia - Thursday, March 16, 2006 at 08:22:46 (PST)
Question about how a transistor really work?
1.Can you use your viewpoint to explain the three basic working modes of transistor--cutoff mode, active mode and saturation mode? what's the difference between them?
2.Can you also use the same viewpoint to figure out the differences between common-emitter, common-collector and common-base amplifier circuit?
Kevin <kevin.cao asng tdk dt com .hk>
USA - Tuesday, March 14, 2006 at 21:22:31 (PST)
when birds sit on powerlines howcome they don't get a shoke?
Lucy <d.gandrews asng paradise dt net .nz>
auckland, newzealand - Sunday, March 12, 2006 at 19:54:12 (PST)
how will the current be effected when adding one more bulb in series and parallel circuit and whether the total current be greater in parallel or series circuit
nayyerhai <nayyerhai asng hotmail dt com >
medina, saudi arabia - Saturday, March 11, 2006 at 08:35:55 (PST)
I have 50 amp service on a post at home that I plug my RV into. Can I run a line from that 50 amp post, 28 feet away to an outlet/receptical, so I can plug in a light?
Michael <mayres1 asng cfl.rr dt com >
W. Melbourne, FL USA - Saturday, March 11, 2006 at 07:04:11 (PST)
i want to know if i can a magnetic field to control electrical current and voltage, and if so what is the ratio?
mariano alaniz <malaniz127 asng hotmail dt com +++++++000+>
san antonio, tx USA - Wednesday, March 08, 2006 at 14:54:10 (PST)
Why are electrons and protons attracted to each other?
Do scientist know what causes positve and negative to attract each other?
Patty Lutz <lutz asng shoreschristian.org>
Chesapeake, VA USA - Wednesday, March 08, 2006 at 12:14:48 (PST)
I am a fifth grade teacher and I am looking for good software to help teach concepts of electricity, heat/energy, and sound. Do you have any suggestions. I hate to buy something that I have not tried. I would appreciate any advice that you have.
D Hofstetter <Dhofste155+++++ asng aol dt com >
Chardon, OH USA - Tuesday, March 07, 2006 at 04:07:06 (PST)
Why would you be electrocuted by putting a toaster oven into your bath tub but not by dropping it into a pool or lake etc. What is the ratio of power to volume of water which causes the danger?
matt groves <itravel99 asng hotmail dt com >
monroe, ct USA - Monday, March 06, 2006 at 06:19:50 (PST)
1)what can happen when life without electricity?
2)what are the letest usage of electricity in modern life or modern world?
3)what are the contribution of electricity in the world....explain it?
nesar ahmed rupal <rupal0071 asng yahoo.com / firstname.lastname@example.org >
dhaka, dhaka bangladesh - Sunday, March 05, 2006 at 00:43:28 (PST)
What is the difference between batteries? AAA, AA, C and D batteries, they are all 1.5 Volts. Is it the current they can produce?
Melissa Zagorski <mziinc asng earthlinkkk dt net netnet>
Chicago, Il USA - Friday, March 03, 2006 at 11:11:29 (PST)
When a charged (eg excess electrons) metal object is grounded, the extent to which the electrons are 'shared' with the ground depends on the grounds relative size. How do the excess electrons on the charged object 'know' how big the ground object is? I figure there is some force at work but if ground is neutral..........
Karl <karl.wrigley asng hsntech dt com >
Sydney, Australia - Friday, February 24, 2006 at 03:13:55 (PST)
Can you give me more examples about power reactive in our life ( besides jet plane )?
tranganh <nguyentranganh90 asng yahoo dt com >
Hcmc, Vietnam - Thursday, February 23, 2006 at 00:24:31 (PST)
Many, many years ago for my science project, I did an experiment with called writing with electricity. My son is in fifth grade and would like to do something like it. Can you help? I used a battery and metal and soaked paper in I think potassium and the current allowed me to write.
Can you help?
laurie <lwest1000 asng hotmail dt com >
deltona, fl USA - Wednesday, February 22, 2006 at 16:07:38 (PST)
Hello, Can you please advise whether it is more energy sufficient money wise to shut the computer completely off or use the screen saver? We only use the computer like 3 hours out of the day, however everyday. Please advise. Thanks!
linda best <bstgrlz asng yahoo dt com remove>
keene, nh USA - Thursday, February 16, 2006 at 19:00:55 (PST)
Your FAQs have been a great help in my preparing electricity to teach my students. However I am still a bit unclear on how alternating current actually provides energy to our homes.
My questions are based on the following assumption:
If the electric company charges us for the pumping of electrons, and the energy is reflected back when appliances donít use the energy, then:
- Do the electrons bounce back and forth in all the branches of wires in our houses (even when appliances arenít connected to outlets)?
- What happens when appliances are connected to the outlet and the switch is off, the electrons wonít reflect the energy because there is a break in the circuit, do we get charged for that?
- Since our homes are built with parallel circuits, electrical energy may be used at one outlet, but be reflected at the other, how does the electric company charge us for the energy if energy is reflected back to them? (How can they measure such slight differences in energy?)
Iíd appreciate if you could answer these questions as soon as possible, as I will be teaching this material in the near future.
You can email a response to titlesearch asng thejnet dt com
B. Petro <xxtitlesearchxx asng xxthejnetxx dt com >
spring valley, ny USA - Wednesday, February 15, 2006 at 07:00:54 (PST)
I am writing a science fiction book and have a question. My plot involves a space craft that lands on a planet because of a malfunction and the planet somehow drains the back up battery packs on the ship. The inhabitants have contructed a tower to collect energy from the clouds before it's released in the form of lightening. Is it feasible that this structure could drain the ships power? Or could the geology of the planet drain the power if it's made up of magnetite? Any suggestions would be helpful. Thanks
Donna <wd.chubb asng zen.co.uk>
APO, AE UK - Wednesday, February 15, 2006 at 05:27:23 (PST)
When a circuit is opened after having been closed for a while (and hence charges have flowed through the wires), is it fair to say that the charges probably don't end where they started? i.e that a wire may end up with different electrons than what it started with. However, an electron is an electron right?
Karl <karl.wrigley asng hsntech dt com .au>
Australia - Tuesday, February 14, 2006 at 06:13:32 (PST)
Please expalin me "Passage of Electricity through concentrated Electrolyte using Carbon Rod".
Thanks and regards,
Pradeep Suvarna <suvarnapradeep asng rediffmail dt com >
Pune, Maharashtra India - Monday, February 13, 2006 at 03:30:15 (PST)
How does electrical energy work?
Westford, MA USA - Sunday, February 12, 2006 at 17:15:10 (PST)
I have had a continuing problem with my cable TV reception and after 9 months, they are telling me the problem lies with my TV's that are putting out 40-50 Volts of electricity. Is this serious? The TV's are aprox 9 years old.
Vicki Olt <volt asng austin.rr dt com >
Austin, TX USA - Saturday, February 11, 2006 at 06:04:20 (PST)
How can i make something like an electric hand buzzer that shocks people?
Derek <www.Devilchild31791 asng aol dt com >
GLens Falls, NY USA - Thursday, February 09, 2006 at 17:41:33 (PST)
My dad asks me a question every day about science, but today he asked me a question I didn't even understand! he asked and I quote!!!
how does the current from a flashlight cell compare with a car battery? can you help me?
Jessica <baby_love_angel_17 asng yahoo dt com >
Vacaville, CA USA - Monday, February 06, 2006 at 22:44:48 (PST)
Can you settle a "discussion" at our local hostelry...Does electricity weigh anything. It's amazing what you talk about after a drink or two!!!
V Helmore <ahelmore at toucansurf dot com>
UK - Saturday, February 04, 2006 at 08:05:07 (PST)
If anyone of three lines(r,y,b)touch each other then electrical short will occour.Then how a delta connected winding works without short?
ibrahim <saifin2k asng yahoo.co.in>
chennai, tamilnadu india - Friday, February 03, 2006 at 19:32:56 (PST)
what types/kinds of carpet create the most friction and why
britney watson <tinkerbell_britneywatson asng yahoo dt com >
horseshoe bend, id USA - Wednesday, February 01, 2006 at 09:00:27 (PST)
What happens when you spin an electrical moter with out power. This is for a science project, need your help. Thanks Winston
Winston <beckybentz asng alltel dt net >
Winston-Salem, N.C. USA - Sunday, January 29, 2006 at 18:58:23 (PST)
Hey how can static electricity flow through a newspaper?
maile boughton <monkeymaile asng aol dt com >
apache jct., az USA - Friday, January 27, 2006 at 09:34:10 (PST)
Why is the current produced by the VDG machine so small? and, would it be possible, even in theory, to build a VDG that produces a lethal current? thanks
Karl Wrigley <karl.wrigley asng hsntech dt com >
Australia - Thursday, January 26, 2006 at 18:52:34 (PST)
This is my question for you guys: what will happen if our electricity ran out, would we have to go back to candles for light, horses/walking for transpotation etc.?
p.s can you answer my question?
valeria torres <babybash_2006_ asng hotmail.com>
tucson, az USA - Thursday, January 26, 2006 at 17:05:12 (PST)
I heard on a TV show that each appliance that is off but plugged in draws a little electricity. I agree if the appliance has a light or something actively drawing electricity, but can't see how a toaster or hair culer can draw juice when it's off just by being plugged in??? I'll do anything to reduce my bill! Hope to hear from you soon. Gail
Gail julian-Fiorini <johngail asng sbcglobal dt net >
Stafford Springs, CT USA - Wednesday, January 25, 2006 at 14:58:13 (PST)
How does electricity get into our homes?
Bianca <x_babi_bee_x asng yahoo.co.uk>
England, Uk - Wednesday, January 25, 2006 at 08:43:21 (PST)
I'm strungling with a question that is inside my head.
here's the question: I know for example that for building a potential in a wire (example elctrical wire moving in a magnetic field - ore transformator) electrons are forced on one site, because off the electric field that is created in the wire. So a potential is build up. Heres my question, is there a time difference ore amplitude difference in the electric field that is created off the moving magnetic field and the electric field build inside the wire caused off the building off electrons(building off a potential). (also since a wire has a resistance, even how small it is, its there). And if yes, has this been measured in real? I always learned that theres no amplitude ore timedifference. But if you think straigt , there always is a time needed for moving electrons from one place to another - under a force - even how small it is.
geert <geert.ollivier asng skynet.be>
Menen, WVL belgium - Wednesday, January 25, 2006 at 04:00:15 (PST)
We are parents of a 7th grader. His teacher posed a question as a quiz, here it is:
Explain why the electric current that flows in a lamp is not an electronic signal?
His answer was: Because it isn't a changing electric current.
The teacher says not good enough, but my husband and I have looked all over this textbook and don't find much to say he is wrong. The book state that a changing electric current that carries information is an electronic signal. Like in a TV or VCR. Help us, please, the teacher is giving him a ZERO on the quiz, he's alway a A or B student. He's upset and we think he should get partial credit for the answer. Thanks for your input.
susan <aldridge422 asng sbcglobal dt net >
new albany, in USA - Tuesday, January 24, 2006 at 17:55:12 (PST)
How to calculate the kw change to amp example i have 10kw motor is based on 220vac 3phase 60hz ?
seenu <seenu2781 asng rediffmail dt com >
USA - Tuesday, January 24, 2006 at 08:33:52 (PST)
Hi I need a formula to convert joules to amps? thanks.
Martin Holbrook <martin.holbrook asng ky.gov>
USA - Monday, January 23, 2006 at 15:45:30 (PST)
I have an LCD monitor and plugged a 12v Adapter into to turn it on. I realized that my eyes tricked me and I had plugged a 12vAC adapter not a 12vDC adapter in. Does 12v AC destroy something that needs 12v DC to operate?
Bruce <brbsj asng prodigy dt net >
Marion, IN USA - Monday, January 23, 2006 at 08:22:49 (PST)
Hi, I was wondering what is the amount of safe electrical current our body can conduct? and how is the electrical charge of our body calculated: i.e is it related to distribution of the electrical charge on the body surface area and how can i calculate the ions distributed on by body surface?
Widget <widget105 asng yahoo dt com >
Teh, Iran - Saturday, January 21, 2006 at 18:55:34 (PST)
Thanks Bill, you are always very helpful.
Can other insulators besides air EVER be turned into conductors under high voltage conditions?
Suppose you had a high quantity of separated opposite charge in a vacuum, and then connected
the charges with various insulating materials, could they become conductors under these conditions?
Karl Wrigley <karl.wrigley asng hsntech dt com >
Australia - Friday, January 20, 2006 at 11:02:06 (PST)
How far can electricity travel?
James Russell <ruske asng mchsi dt com >
Storm Lake, IA USA - Friday, January 20, 2006 at 10:58:46 (PST)
What is the difference between line and load.
Gil <gilforster asng cogeco.ca.on.cacf>
Windsor, ON canada - Friday, January 20, 2006 at 07:46:06 (PST)
what is concept that current changes its direction after every half cycle
rohit manchanda <rohit_abb2005 asng yahoo.co.in>
hissar, haryana india - Friday, January 20, 2006 at 05:11:47 (PST)
Increase voltage in a circuit and you get a corresponding increase in current. Does the increase in voltage cause more electrons to flow (per cross sectional area) or is it just that the electrons already flowing will flow faster? Doesn't the intensly high voltage associated with lightning cause electrons to be stripped of their atoms and start flowing?
Karl <karl.wrigley asng hsntech dt com >
Australia - Thursday, January 19, 2006 at 05:01:36 (PST)
why with increas of frequancy the ac current tries to flow on the surface of the wire rather then in-side of the wire . And why the cunductors offer more resistance to ac current rather then dc current through the ckt.
raaj <trikuta116s asng yahoo.co.in>
jammu, j&k india - Wednesday, January 18, 2006 at 23:21:26 (PST)
What is dc voltage and how does it work? Thanks
Nancy Farrow <kotabear1990 asng yahoo dt com >
Coldwater, MS USA - Wednesday, January 18, 2006 at 14:55:36 (PST)
hello , my garage has 115v .I have a ark welder that uses 208v single phase how easy or hard is it to get 208 v to my garage
joseph navarra <navarra asng cox dt net >
san diego, ca USA - Tuesday, January 17, 2006 at 20:51:52 (PST)
can waterfalls create electricity
kelly <panna10 asng msn dt com >
rockaway, ny USA - Friday, January 13, 2006 at 17:12:37 (PST)
what type of copper wire(bare copper of tinned copper)conducts electricity best?
tucson, az USA - Thursday, January 12, 2006 at 17:47:31 (PST)
We made a simple copper capacitor same as the film can capacitor - it will not spark can you tell me why?
Angela Gandy <my1967kamaro asng aol dt com >
Weatherford, TX USA - Tuesday, January 10, 2006 at 12:07:27 (PST)
What's the difference between real and reactive loads?
Gavin Griffiths <baggie670 asng aol dt com >
Uk - Tuesday, January 10, 2006 at 11:02:36 (PST)
my name is Giovanni and I am a chemist.
I have synthesized a neutral molecule containing a fullerene. If the compound (as a powder finely grounded) is placed in a solvent where it is not soluble (i.e. hexane)and an electric field applied ( 0-100 V) I noticed that the compound starts to organize itself along some lines and by futher increasing the voltage it starts to escape from the electrode, going out even from the solution. As I said the compound is neutral so it should not have a net charge. How is it possible then?
Dr. Giovanni Bottari <giovanni.bottari asng uam.es>
Madrid, Spain - Tuesday, January 10, 2006 at 04:20:43 (PST)
i have question.. i am trying to gather imformation for my science fair projectand i am making a alarm bell box.. soo its about how elecrity travels.. do you suggest any sites for a 6th grader?
sana <mrs_skywalker12 asng yahoo dt com >
fremont, ca USA - Monday, January 09, 2006 at 20:08:46 (PST)
my work place has three phase 600 volts output, the electrician try to install a light fixture require 347 volts, he measure the black wire and neutral wire it shows 350 volts, but when he connect them the light fixture, the light won't come on, and it drop to 100 volts, he spent some times there still couldn't figure out why, he is comming back tomorrow, can you tell me what is the problem.
the 600 volts works fine with equipments.
jet lee <jet9508 asng msn dt com >
toronto, ont canada - Saturday, January 07, 2006 at 21:19:32 (PST)
I just can't understand mains electricity. If the neutral wire is connected to the earth, how is the circuit complete? Does current in the neutral wire alternate as well, even if it is zero voltage? Is there only one wire in a dynamo (the live wire)- and current being pushed and pulled along it; in which case, why is a neutral wire needed?
rehan <rehanblue asng yahoo.co.uk456456>
USA - Friday, January 06, 2006 at 03:02:39 (PST)
How does electricity work and whatis it?
Anna-lisa Helmy <"zanuuba asng aol.com;>
San Francisco, C A USA - Thursday, January 05, 2006 at 17:16:50 (PST)
i just wanted to know if you can make electricity with a spoon and fork instead of wires
liliya <liiyalevkovets asng hotmail dt com >
utica, ny USA - Wednesday, January 04, 2006 at 14:51:37 (PST)
Why does a wire connected straight across the terminals of a battery cause the battery to die quicker than if it had a resistor (like a bulb) in the circuit?
Karl <karl.wrigleyatsignhsntech dt com >
USA - Tuesday, January 03, 2006 at 17:04:43 (PST)
Hi Bill, I have found this website absolutely fascinating and I have learnt more in 2 weeks than in all my time at school in regards to "electricity". I had good grades at school, as luckily I was good at the math, but deep down I new I never really understood this "electricity" stuff, and reading this website has shown me why. I wish I was taught this way 15 years ago. After reading all the articles and FAQ, I now have heaps of questions and I know that searching the net will only get me the usual confusing answers, unlike the answers given here. Are there other sites like yours that offer understandable explanations and more reading material? Would you be willing to answer a bunch of questions (in your own time of course) if I posted them?
Karl <karl.wrigley asng hsntech dt com >
Australia - Tuesday, January 03, 2006 at 02:28:17 (PST)
I have a new home, my lights keep dimming. how do i find the problem?
john monroe <jmonroe755 asng aol dt com >
omaha, ne USA - Monday, January 02, 2006 at 12:59:38 (PST)
How can electricity be used to make sound , motion, and light?
Mahreen hussain <bfs4ever786 asng hotmail,com>
burlington, ont canada - Sunday, January 01, 2006 at 08:14:34 (PST)
Old comments: 2007
Old comments: 2005
Old comments: 2004
Old comments: 2003
Old comments: 2002
Old comments: 2001
Old comments: 2000
Old comments: 1999
Created and maintained by
Mail me at:
(Original scripts and Guestbook software created by Matt's script archive and can be
found at Matt's Script Archive)