Question

While taking photographs in Death Valley on a day when thetemperature is 65◦C, Bill
Hiker finds that a certain voltage applied to a copper wire producesa current of 1.536 A. Bill then travels to Antarctica and appliesthe same voltage to the same wire. What current does he register inAntarctica if the temperature there is −86◦C? Assume that no changeoccurs in the wire’s shape and size. The temperature coefficient ofresistivity of copper is 0.0039 (◦C)−1 for T0 = 20◦C.
Answer in units of A.