STANDARDPhysics-Magnetic Effects of Current
STANDARD Physics Motion of Charged Particles in Magnetic Field Assertion Reason Question
Type: Assertion Reason-conceptual-Medium
Assertion: Magnetic field can not change kinetic energy of a moving charge. Reason: Magnetic field can not change velocity vector.
A
Both assertion and reason are true and reason is the correct explanation of assertion.
B
Both assertion and reason are true but reason is not the correct explanation of assertion.
C
Assertion is true but reason is false.
D
Both assertion and reason are false.
Correct Answer
Option C
Detailed Explanation
Magnetic force on moving charge is always perpendicular to its velocity. F = q(v × B). Also, work done by magnetic force on a moving charge is zero.
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