College Physics (4th Edition)

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

Chapter 17 - Conceptual Questions - Page 650: 22


see solution

Work Step by Step

The potential near the positive charge is positive and vice-versa. Thus, a point in region B will have 0 potential. When we move far away, it will act as a single point charge of $-3uC$ , giving negative potential. Thus, a point in region A will have 0 potential too. The electric field can be 0 only in region A, and this won't occur at the same point where potential is 0.
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