College Physics (7th Edition)

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

Chapter 18 - Basic Electric Circuits - Learning Path Questions and Exercises - Multiple Choice Questions - Page 650: 6


(b) the 6-ohm resistor

Work Step by Step

$R_{1}=2ohm$ $R_{2}=6ohm$ Current will be same i.e. $I$. Joule heating is same as the power output of the resistors. $P_{1}=I^{2}R_{1}$ $P_{2}=I^{2}R_{2}$ Thus, $P_{2}=3P_{1}$ Clearly, the resistor with 6-ohm resistance will produce more Joule heating. Thus the answer is (b).
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