Physics: Principles with Applications (7th Edition)

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

Chapter 16 - Electric Charge and Electric Field - Questions: 20

Answer

a. Yes. b. Yes.

Work Step by Step

See the diagram. If the two charges have opposite sign, then at the point marked A the electric field could be zero. On the line to the left of Q, the electric fields from the two charges point in opposite directions and could cancel. Because point A is closer to the smaller charge, the field that Q creates there could have the same magnitude as the field created by the larger charge. If the two charges have the same sign, then at the point marked B the electric field could be zero. On the line between the charges, the electric fields from the two charges point in opposite directions and could cancel. Because point B is closer to the smaller charge, the field that Q creates there could have the same magnitude as the field created by the larger charge.
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