Physics: Principles with Applications (7th Edition)

Published by Pearson
ISBN 10: 0-32162-592-7
ISBN 13: 978-0-32162-592-2

Chapter 17 - Electric Potential - Questions: 7

Answer

No and no.

Work Step by Step

Consider the point midway between a positive charge and an equal-magnitude negative charge. V = 0 there, as calculated by equation 17-5, but the electric field is nonzero and points toward the negative charge. Halfway between two positive charges the electric field is 0 because the two equal and opposite fields cancel, but V is a positive number (by equation 17-5).
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