Concept explainers
The situation in which a spatially uniform magnetic field cannot exert a magnetic force on a particle.
Answer to Problem 1OQ
Option (c) and (e).
Explanation of Solution
Write the formula for magnetic force (Lorentz force)
Here,
and
If the particle is not charged or moves at an angle
Conclusion
A spatially uniform magnetic field can exert a magnetic force on the particle which is charged. Thus, option (a) is incorrect.
A spatially uniform magnetic field that moves perpendicular to the magnetic field can exert magnetic force on the particle. Therefore, option (b) is incorrect.
A spatially uniform magnetic field cannot exert a magnetic force on the particle moving parallel to the magnetic field. Thus, option (c) is correct.
When the magnitude of the magnetic field changes, a spatially uniform magnetic field can exert a magnetic force on the particle. Thus, option (d) is incorrect.
A magnetic field that is spatially uniform cannot exert a magnetic force on the resting partcle Thus, option (e) is correct.
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Chapter 22 Solutions
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