Physics (10th Edition)

Published by Wiley
ISBN 10: 1118486897
ISBN 13: 978-1-11848-689-4

Chapter 20 - Electric Circuits - Problems - Page 573: 13



Work Step by Step

$R=R_{0}(1+\alpha\Delta T)$ where $\alpha$ is the temperature coefficient of resistivity. $\implies \alpha=\frac{R-R_{0}}{R_{0}\Delta T}=\frac{43.7\,\Omega-38.0\,\Omega}{38.0\,\Omega\times(55-25)^{\circ}C}=5.0\times10^{-3}\,(C^{\circ})^{-1}$
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