Question

A bar magnet has magnetic dipole moment `barM`. Its initial position is parallel to the direction of uniform magnetic field `barB`. In this position, the magnitudes of torque and force acting on it respectively are ______.

पर्याय

• 0 and MB

• MB and MB

• 0 and 0

• `|barM xx barB|` and 0

Answer 1

A bar magnet has magnetic dipole moment `barM`. Its initial position is parallel to the direction of uniform magnetic field `barB`. In this position, the magnitudes of torque and force acting on it respectively are 0 and 0.

Explanation:

Torque = τ = MBsin θ

Since M and B are parallel, then θ = 0 and hence τ = 0.

Torque is 0. So, in this case, force is also zero since the distance is not equal to zero.