NEET Physics Bar Magnet MCQ Question
When a bar magnet is placed in a uniform magnetic field, which of the following statements is true regarding the torque acting on the magnet?
The torque on it is equal to m × B.
The torque on it is zero.
The torque is dependent on the distance from the magnet's center.
The torque causes the magnet to rotate indefinitely.
Correct Answer
Detailed Explanation
When a bar magnet with a dipole moment m is placed in a uniform magnetic field B, the torque acting on the magnet is given by the formula m × B, indicating how it tends to align with the field.
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