Physics for Scientists and Engineers: A Strategic Approach with Modern Physics (4th Edition)

Published by Pearson
ISBN 10: 0133942651
ISBN 13: 978-0-13394-265-1

Chapter 30 - Electromagnetic Induction - Exercises and Problems - Page 874: 73

Answer

$L = 2.0\times 10^{-3}~H$ $C = 1.3\times 10^{-7}~F$

Work Step by Step

We can use the energy to find the required inductance: $E = \frac{1}{2}LI^2$ $L = \frac{2E}{I^2}$ $L = \frac{(2)(1.0\times 10^{-5}~J)}{(0.10~A)^2}$ $L = 2.0\times 10^{-3}~H$ We can find the required capacitance: $f = \frac{1}{2\pi~\sqrt{LC}}$ $f^2 = \frac{1}{4\pi^2~LC}$ $C = \frac{1}{4\pi^2~L~f^2}$ $C = \frac{1}{(4\pi^2)~(2.0\times 10^{-3}~H)~(10\times 10^3~Hz)^2}$ $C = 1.3\times 10^{-7}~F$
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