Answer
$5.7s$
Work Step by Step
We can find the required time as follows:
$t=-RCln(1-\frac{V}{\mathcal{E}})$
We plug in the known values to obtain:
$t=-(50\times 10^3\Omega)(140\times 10^{-6}F)ln(1-\frac{5.0V}{9.0V})$
$t=5.7s$
Physics Technology Update (4th Edition)
by Walker, James S.
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 759: 84
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