University Physics with Modern Physics (14th Edition)

Published by Pearson
ISBN 10: 0321973615
ISBN 13: 978-0-32197-361-0

Chapter 27 - Magnetic Field and Magnetic Forces - Problems - Discussion Questions - Page 911: Q27.6


See explanation.

Work Step by Step

The magnetic force on a particle is always perpendicular to the particle’s velocity $\vec{v}$ so it does no work. However, this force can change the direction of the particle’s velocity, which affects the motion. For an object moving in circular motion, the force(s) providing the centripetal force play a similar role – they do no work, but affect the object’s motion.
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