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: 5



Work Step by Step

$H = I^2 * Rt = V*t*I$ Thus, since voltage is constant, the current will provide a valid comparison. The voltage is constant so the current is inversely proportional to the resistance. Since we showed current is directly proportional to I, thus the smaller resistor causes the most heating - A.
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