Fundamentals of Physics Extended (10th Edition)

Published by Wiley
ISBN 10: 1-11823-072-8
ISBN 13: 978-1-11823-072-5

Chapter 27 - Circuits - Problems - Page 802: 99c

Answer

The current in resistance 2 is $~~1.0~mA$

Work Step by Step

After a long time, the capacitor acts like a broken wire so no current flows around the branch with the capacitor; all the current flows through $R_2$ and then $R_1$ We can find the current in $R_2$ and $R_1$: $i = \frac{\mathscr{E}}{R_1+R_2}$ $i = \frac{30~V}{20~k \Omega+10~k \Omega}$ $i = 1.0\times 10^{-3}~A$ The current in resistance 2 is $~~1.0~mA$
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