College Physics (4th Edition)

Published by McGraw-Hill Education
ISBN 10: 0073512141
ISBN 13: 978-0-07351-214-3

Chapter 17 - Conceptual Questions - Page 649: 7


If there were a nonzero electric field, then charges would move and the conductor wouldn't be in electrostatic equilibrium.

Work Step by Step

In electrostatic equilibrium, the internal charges are not moving. Thus there must not be any internal electric field. Hence the potential must be constant.
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