College Physics (4th Edition)

Published by McGraw-Hill Education
ISBN 10: 0073512141
ISBN 13: 978-0-07351-214-3

Chapter 1 - Problems - Page 19: 15


The ratio $P_B/P_A$ is 0.704

Work Step by Step

$P_A = V/R_A$ and $P_B = V/R_B$ Note that $R_B = 1.42~R_A$ We can find the ratio of $P_B/P_A$. $P_B/P_A = \frac{V/R_B}{V/R_A} = R_A/R_B = R_A/(1.42~R_A) = 1/1.42 = 0.70$ The ratio $P_B/P_A$ is 0.704.
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