Answer
$P =0.375W$
Work Step by Step
Applying kirchofs law
$ 12V- 0.25A * 12\Omega - 0.25A* 6\Omega -6V - 0.25A*R =0$
$12V -3V - 1.5V -6V = 0.25A*R$
$R= 6\Omega$
Power dissipated is
$P = I^2 R = (0.25)^2 * 6 W$
$P =0.375W$
Physics for Scientists and Engineers: A Strategic Approach with Modern Physics (3rd Edition)
by Knight, Randall D.
Published by
Pearson
ISBN 10:
0321740904
ISBN 13:
978-0-32174-090-8
Chapter 31 - Fundamentals of Circuits - Exercises and Problems - Page 917: 42
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