Physics: Principles with Applications (7th Edition)

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

Chapter 17 - Electrical Properties - Misconceptual Questions: 5

Answer

Choice B.

Work Step by Step

As stated, it takes work W to bring Q1 and Q2 together until they are a distance d apart. Bringing in a third charge means it is repelled by each of the other charges. It takes an amount of work W to bring Q3 a distance d away from Q1, and an amount of work W to bring Q3 a distance d away from Q2. The total work to assemble 3 charges is 3W.
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