Physics (10th Edition)

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

Chapter 20 - Electric Circuits - Problems - Page 573: 16



Work Step by Step

Resistivity $\rho=2.82\times10^{-8}\,\Omega \cdot m$ (for aluminum) Area $A= 4.9\times10^{-4}\,m^{2}$ Length $l=10\,km=10\times10^{3}\,m=10^{4}\,m$ Resistance $R=\rho \frac{l}{A}$ $=2.82\times10^{-8}\,\Omega \cdot m\times\frac{10^{4}\,m}{4.9\times10^{-4}\,m^{2}}=0.58\,\Omega$
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