Physics Technology Update (4th Edition)

Published by Pearson
ISBN 10: 0-32190-308-0
ISBN 13: 978-0-32190-308-2

Chapter 21 - Electric Current and Direct-Current Circuits - Problems and Conceptual Exercises - Page 757: 56

Answer

$2.3A$

Work Step by Step

We know that $V=IR$ $\implies V=(0.795A)(13.8\Omega)=10.97V$ The current in $17.2\Omega$ resistor is given as $I^{\prime}=\frac{10.97V}{17.2\Omega}=0.637A$ As the equivalent resistance of $4.11\Omega$, $8.45\Omega$ is parallel to $17.2\Omega$, thus the current in this combination is $I^{\prime \prime}=\frac{V}{R_{4.11}+R_{8.45\Omega}}=0.873A$ Now the required current through the entire circuit can be calculated as $I=0.795A+0.637A+0.873A$ $I=2.3A$
Update this answer!

You can help us out by revising, improving and updating this answer.

Update this answer

After you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.