College Physics (7th Edition)

Published by Pearson
ISBN 10: 0-32160-183-1
ISBN 13: 978-0-32160-183-4

Chapter 17 - Electric Current and Resistance - Learning Path Questions and Exercises - Multiple Choice Questions - Page 617: 18


(b) the copper wire

Work Step by Step

The temperature coefficient of resistivity of copper is more than aluminium. Since, rapidity of increase in resistance is directly proportional to rise in temperature, and the coefficient, the one which has more value of coefficient will higher rapid increase in resistance. Now since the values of temperature coefficient of :- Aluminium = $4.29\times10^{-3}/^{\circ}C$ Copper = $6.80\times10^{-3}/^{\circ}C$, Copper wire's resistance will increase more rapidly.
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