Conceptual Physics (12th Edition)

Published by Addison-Wesley
ISBN 10: 0321909100
ISBN 13: 978-0-32190-910-7

Chapter 22 - Think and Explain: 88

Answer

The charge concentration on the corners is greater than it is on the flat surfaces.

Work Step by Step

The electric field near a charged conductor is stronger where the conductor tapers to a sharp point (this is the principle behind lightning rods). The charges especially gather on the surface near sharp points to cancel out the interior E field. This is discussed on page 420, and shown in Figure 22.21.
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