Physics-Bar Magnet
NEET Physics Bar Magnet MCQ Question
Type: MCQ-fact-Hard-Class 12
When a bar magnet is placed in a uniform magnetic field, what is the expression for the torque acting on it?
A
m × B
B
B × m
C
m + B
D
m / B
Correct Answer
Option A
Detailed Explanation
The torque on a bar magnet in a uniform magnetic field is given by the expression m × B, where m is the magnetic moment and B is the magnetic field. This is derived from the principles of magnetism discussed in the NCERT context.
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