Physics (10th Edition)

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

Chapter 20 - Electric Circuits - Problems - Page 573: 11



Work Step by Step

$R_{Al}=\rho_{Al}\times\frac{l}{A}=0.20\,\Omega$ $R_{Cu}=\rho_{Cu}\times\frac{l}{A}=\frac{R_{Al}}{\rho_{Al}}\times\rho_{Cu}$ $=\frac{0.20\,\Omega}{2.82\times10^{-8}\,\Omega\cdot m}\times1.72\times10^{-8}\,\Omega\cdot m=0.12\,\Omega$
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