Essential University Physics (3rd Edition)
Essential University Physics (3rd Edition)
3rd Edition
ISBN: 9780134202709
Author: Richard Wolfson
Publisher: PEARSON
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Chapter 26, Problem 1FTD

A charged particle moves through a region containing only a magnetic field. Under what condition will it experience no force?

Expert Solution & Answer
Check Mark
To determine

The condition when an electron will not experience a force in a magnetic field.

Answer to Problem 1FTD

An electron will not experience any force in a magnetic field when the particle is moving either parallel or antiparallel to the direction of field.

Explanation of Solution

Write the equation to find the force acting on a particle in magnetic field.

F=qvBsinθ

Here,

F is the force

q is the charge

v is the velocity

B is the magnetic field

The force becomes zero when the sine term becomes zero. For sine term to be zero the angle θ must be 0°or180° .

Therefore the force acting on a particle becomes zero only when the particle is moving parallel or antiparallel to the direction of magnetic field.

Conclusion:

Therefore, an electron will not experience any force in a magnetic field when the particle is moving either parallel or antiparallel to the direction of field.

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Chapter 26 Solutions

Essential University Physics (3rd Edition)

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