Physics Technology Update (4th Edition)

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

Chapter 24 - Alternating-Current Circuits - Problems and Conceptual Exercises - Page 870: 71

Answer

(a) $9.7pH$ (b) $10\Omega$

Work Step by Step

(a) We can find the required inductance as follows: $f=\frac{1}{2\pi \sqrt{LC}}$ This simplifies to: $L=\frac{1}{(2\pi f)^2C}$ We plug in the known values to obtain: $L=\frac{1}{[2\pi(95\times 10^6)]^2(0.29\times 10^{-6})}$ $L=9.7\times 10^{-12}H=9.7pH$ (b) We can find the required resistance as $R=\frac{|2\pi fL-(2\pi fC)^{-1}|}{\sqrt{24}}$ $R=\frac{|2\pi(11KHz)(9.7pH)-[2\pi(11KHz)(0.29\mu F)]^{-1}|}{\sqrt{24}}$ $R=10\Omega$
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