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# A parallel-plate capacitor C, with plate separation d, is

ISBN: 9780321856562 45

## Solution for problem 8P Chapter 11

Introduction to Electrodynamics | 4th Edition

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Problem 8P

Problem 8P

A parallel-plate capacitor C, with plate separation d, is given an initial charge (±)Q0. It is then connected to a resistor R, and discharges, Q(t) =

(a) What fraction of its initial energy (Q20 /2C) does it radiate away?

(b) If C = 1 pF, R = 1000 Ω, and d = 0.1 mm, what is the actual number? In electronics we don’t ordinarily worry about radiative losses; does that seem reasonable, in this case?

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