Concept explainers
The circumstances in which a spatially uniform magnetic field cannot exert a magnetic force on a particle.
Answer to Problem 1OQ
Option (c) The particle moves parallel to the magnetic field and option (e) the particle is at rest.
Explanation of Solution
A uniform magnetic field cannot exert a magnetic force only when the particle is not charged and moving at an angle of
Conclusion:
As a spatially uniform magnetic field cannot exert a magnetic force on the particle moving parallel to the magnetic field. Therefore, option (c) is correct.
As a spatially uniform magnetic field cannot exert a magnetic force on the particle which is at rest. Therefore, option (e) is correct.
As a spatially uniform magnetic field can exert a magnetic force on the particle which is charged. Therefore, option (a) is incorrect.
As a spatially uniform magnetic field can exert a magnetic force on the particle which moves perpendicular to the magnetic field. Therefore, option (b) is incorrect.
A spatially uniform magnetic field can exert a magnetic force on the particle when the magnitude of the magnetic field changes. Therefore, option (d) is incorrect.
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Chapter 29 Solutions
Physics For Scientists And Engineers With Modern Physics, 9th Edition, The Ohio State University
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