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 - Page 467: 1

Answer

By comparing to a known charge.

Work Step by Step

Another object of known charge must be brought near the comb, as in Figure 16-2. If they repel, then the comb has the same charge as the object, and if they attract, the two objects have opposite sign.
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