Physics: Principles with Applications (7th Edition)

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

Chapter 20 - Magnetism - Misconceptual Questions: 10

Answer

Choice A.

Work Step by Step

The magnetic force is always perpendicular to the particle’s velocity, so it can change the particle’s direction by serving as a centripetal force. However, there is no force component along the direction of motion. The magnetic force does no work, and the kinetic energy (and speed) of the particle does not change.
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