Asked by roland

what voltage must be applied to a 6.4-ohm lamp filament to develop 20 amperes of current?
Answered by Steve
E = IR = 6.4 * 20
Answered by roland
if the 5-ohm heater in problem 15 is placed with a 15-ohm heater, what current will the 15-ohm heater draw from the same power supply?
Answered by Steve
ummm. E = IR ?
This time find I.
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