Please consider this question in a very fundamental manner. For example if we connect a small piece of nicrome coil to a lead acid battery via a copper wire without any insulation the same thing is happening.
2006-10-11 16:58:37 · 4 answers · asked by Anonymous in Science & Mathematics ➔ Physics
The rate of heat production in a conductor, in watts equals current squared times resistance. The current in the connection wires is the same as in the heating element, but the resistance is much lower, so you get bugger all heating.
2006-10-11 17:06:49 · answer #1 · answered by zee_prime 6 · 0⤊ 0⤋
Correct! The Coil can handle the load of AC which fluctuates. It can not handle the DC load which is constant. But, use the same coil on a Flashlight Battery and you will have a cool cigarette lighter. The leads are irrelevant.
2006-10-11 17:09:23 · answer #2 · answered by Snaglefritz 7 · 0⤊ 0⤋
zee prime got it right.
The nichrome has a lot of resistance; the copper has almost none. The current is the same in both so the power formula tells you where all the electrical energy is being turned into heat:
Watts = (I^2) * R
2006-10-11 17:19:10 · answer #3 · answered by Steve 7 · 0⤊ 0⤋
coil draws less amps than the wire can handle
if coil draws 10 amps and wire can take 20 amps with out
getting hot then wire won't get hot
2006-10-11 17:09:40 · answer #4 · answered by barry r 6 · 0⤊ 0⤋