AIPMT PRELIMS2007Physics-Magnetism
AIPMT PRELIMS 2007 Physics Motion of Charged Particles MCQ Question
Type: MCQ-conceptual-Medium-Class 12
A beam of electron passes undeflected through mutually perpendicular electric and magnetic fields. If the electric field is switched off, and the same magnetic field is maintained, the electrons move
A
in a circular orbit
B
along a parabolic path
C
along a straight line
D
in an elliptical orbit
Correct Answer
Option A
Detailed Explanation
When only a magnetic field acts on a charged particle, it moves in a circular path due to the Lorentz force acting perpendicular to the velocity of the particle.
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