Question

What is the unit of the temperature coefficient of resistance (α)?

(a) ^oC

(b) ^oC^-1

(c) \(\frac {\Omega}{ ^{\circ} C}\)

(d) \(\frac { ^{\circ} C}{\Omega}\)

This question was addressed to me in semester exam.

I would like to ask this question from Current Electricity in portion Current Electricity of Physics – Class 12

Answer 1

Right choice is (b) ^oC^-1

The best I can explain: The temperature coefficient of resistivity is defined as the increase in resistivity per unit resistivity per degree rise in temperature.

The unit of the temperature coefficient of resistance is ^oC^-1.