A thin uniform donut, carrying charge Q and mass M, rotates about its axis as shown in

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A thin uniform donut, carrying charge Q and mass M, rotates about its axis as shown in Fig. 5.64.

(a) Find the ratio of its magnetic dipole moment to its angular momentum. This is called the gyromagnetic ratio (or magnetomechanical ratio).

(b) What is the gyromagnetic ratio for a uniform spinning sphere? [This requires no new calculation; simply decompose the sphere into infinitesimal rings, and apply the result of part (a).]

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Introduction to Electrodynamics

ISBN: 978-8120316010

3rd Edition

Authors: David J. Griffiths

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Question Posted: Nov 26, 2010 06:47 AM

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A thin uniform donut, carrying charge Q and mass M, rotates about its axis as shown in

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m L a I Q Qw 2W 2 Q WR 2 MwR c m Q 2M e 2m 2 e 4m a TR m m R 2 2w...View the full answer

Introduction to Electrodynamics

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