Answer
The resistance of the battery is $~0.43~\Omega$
Work Step by Step
We can find $R_b$, the resistance of the battery:
$R_b = \frac{V}{I}$
$R_b = \frac{9.0~V}{21~A}$
$R_b = 0.43~\Omega$
The resistance of the battery is $~0.43~\Omega$
Physics for Scientists and Engineers: A Strategic Approach with Modern Physics (4th Edition)
by Knight, Randall D.
Published by
Pearson
ISBN 10:
0133942651
ISBN 13:
978-0-13394-265-1
Chapter 27 - Current and Resistance - Exercises and Problems - Page 763: 38
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