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College Physics

11th Edition
Raymond A. Serway + 1 other
ISBN: 9781305952300

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BuyFindarrow_forward

College Physics

11th Edition
Raymond A. Serway + 1 other
ISBN: 9781305952300
Textbook Problem

As a charged particle moves freely in a circular path in the presence of a constant magnetic field applied perpendicular to the particle’s velocity, the particle’s kinetic energy (a) remains constant, (b) increases, or (c) decreases.

To determine
What happens to the kinetic energy of a charged particle which moves freely in a circular path in the presence of a constant magnetic field.

Explanation
The magnetic force on a charged particle is given by,

F=q(v×B)

Hence the magnetic force is always perpendicular to the velocity

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