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(a) A point charge q is inside a cavity in an uncharged

Introduction to Electrodynamics | 4th Edition | ISBN: 9780321856562 | Authors: David J. Griffiths ISBN: 9780321856562 45

Solution for problem 40P Chapter 2

Introduction to Electrodynamics | 4th Edition

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Introduction to Electrodynamics | 4th Edition | ISBN: 9780321856562 | Authors: David J. Griffiths

Introduction to Electrodynamics | 4th Edition

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Problem 40P

Problem 40P

(a) A point charge q is inside a cavity in an uncharged conductor (Fig. 2.45). Is the force on q necessarily zero?11

(b) Is the force between a point charge and a nearby uncharged conductor always attractive?12

Reference figure 2.45

Step-by-Step Solution:

Solution 40P

Part (a)

Step 1 of 2:

Consider an uncharged conductor having a cavity and a point charge is placed inside it. We are going to find the force acting on the charge. The force on the point charge is not zero. Because the point charge induces the opposite charge on the wall and it will experience an attractive force.

The answer is No.

Part (b)

Step 2 of 2

Chapter 2, Problem 40P is Solved
Textbook: Introduction to Electrodynamics
Edition: 4
Author: David J. Griffiths
ISBN: 9780321856562

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(a) A point charge q is inside a cavity in an uncharged