Q:How can I investigate the resistance of wire and how it changes with the length of the wireCheers

get a multimeter. get long lengths of different gauge (diameter) copper lead wire. for each diameter, measure the resistance. cut 1ft off, measure the resistance, cut 1ft off, measure the resistance, cut 1ft off, etc etc. plot the resistance vs length for each gauge separately. show that the resistance is linear in the wire length in each case. now use the different diameter data to measure the resisitivity of copper. resisitivity rho = R*A/L R = resistance L = length A = cross-sectional area cheers

Q:just need a little help to make right.just wiring an outlet from building to breaker box outside.. which way is the right way to wire it to a breaker then the box. Got the right breaker. Thanks

in case you are able to desire to ask this question you don't comprehend adequate to do it suitable. Get an electrician to do it. you will the two electrocute your self or burn your place down in case you do it.

Q:But when I look closely (you can't see it in the picture unfortunately) there are some tiny wisps of the coiled copper wire that looks as if it could have been connected to the pulled wire. I'm not sure.How do I connect the wires to make the headsets work again?If you guys need more pictures, please tell me.Thanks in advance!

i've worked in fine wires like this and it is very difficult, espeically if you thin kkyou wnat to solder them. also, yoj're correct, those pics are horrible, you need better ones if you want real answers here.

Q:The outlet box has 2 black wires capped together, 2 white wires capped together, 2 bare wires capped together, and a single red wire. The light fixture I want to install is a two bulb fixture that has 2 black wires, 2 white wires, and 1 bare wire.

It is obvious from the question that you have zero knowledge of wiring. While this is an extremely basic thing to do, I think it is better to get a professional so you and your house will be safe. Electricity is too dangerous to do without even the most basic understanding of safe procedures and standards. You will get people telling you how easy this is, but I would rather have you safe than try this your self.

Q:Can I use 12-2 gauge wire on a 10 amp breaker to wire my light switches,and can I use 10 gauge wire on a 10 amp breaker? For a light fixture

Normally lighting circuits have a 15 amp breaker for protection and wired with 14 gauge wire. 14 gauge wire is good for 15 amps. 12 gauge wire is good for 20 amps. 10 gauge wire is good for 30 amps. So you can use 12 gauge wire, if you alrady have it available, but if you are going to go out and buy it, you can save some money by buing #14 wire. You can always go oversize with the WIRE just never undersized with the wire. Circuit breakerprotection is prescribed by the NEC. 15 amps for lighting and 20 amps for wall outlet power. I don't know where you even found a 10 amp breaker. ---------------------------------------... WOW! XTX has no clue what the National Electrical Code even says about this! Disregard his answer! It will get you into trouble!

Q:plz answer correctly as soon as possible......why we use stranded 500kV wire?

After AWG 12 or 14, all cable is stranded. The only purpose of stranded wire is to give it flexibility, regardless of voltage or current. .

Q:I have two kicker cvr 12s looking to wire them to an acoustic 601se amp can someone please tell me how to wire them like by matching the dots up and stuff.

Wire okorder /.. . This will drop the ohms down to 2 ohms each and this way of wiring sound much better.

Q:i have a 00 gmc yukon and tried installing my cd deck. i pulled off the original harness from the stock deck radio and now its just all wires (its my first so i didnt know), i connect the alpine deck wires and tried to connect them all together. i had a few figure out, except a small noise coming from my stock tweeters every time i step on the pedal. then my speed odometer sensor was going with the bass of my subs... whats wrong? can someone find me a chart of what color wires supposed to go where? thanks for your help

Hey bro why dont you buy a wiring harness from best buy or OKorder it can cost u like 10 bucks or so and it will be alot easier to connect the head unit. That noise that u are hearing is the ground, that ground that u have is either no good enough or it is loose. Good Luck

Q:When you electromagnetize a nail with wire coiled around it, then connect it to a small battery, how come it works when the wire has been been insulated,..... and what if you were to use uninsulated wire.

The insulation around the wire prevents the flow of current between wires, (shorting out the coil). It has no effect on the magnetic field created by the flow of current in the wires. If you tried uninsulated wire, you wouldn't have much of a field, as the current path would be short, direct from one end of the coil to the other with no 'turns` at all.

Q:ok got the mute wire figured out thanks to yahoo answers people..now i was wondering what the [ ILL] WIRE IS FOR ,ILLUMINATOR FOR SOMETHING?..also which wires on the speaker wires are pos and neg one is solid ,one is solid with stripe..not sure which is pos or neg thanks alot steve

first answer is correct, However, as long as you keep the solids and stripes consistent, it doesn't really matter if you hook them up negative stripe or positive stripe...just keep them all the same..