A closed current-carrying loop having a current I is having area A. Magnetic moment of this loop is defined as `vec(mu) = vec(IA)` where direction of area vector is towards the observer if current is flowing in anticlockwise direction with respect to the observer. If this loop is placed in a uniform magnetic field `vec(B)`, then torque acting on the loop is given by `vec(tau) = vec(mu) xx vec(B)`. Now answer the following questions: A uniformly charged insulating ring is rotated in a uniform magnetic field about its own axis, thenA. Ring will experience a magnetic forceB. Ring must be experience a magnetic torqueC. Ring may experience a magnetic torqueD. None of the above

A closed current-carrying loop having a current I is having area A. Ma

1.	A closed current-carrying loop having a current I is having area A. Magnetic moment of this loop is defined as `vec(mu) = vec(IA)` where direction of area vector is towards the observer if current is flowing in anticlockwise direction with respect to the observer. If this loop is placed in a uniform magnetic field `vec(B)`, then torque acting on the loop is given by `vec(tau) = vec(mu) xx vec(B)`. Now answer the following questions: A uniformly charged insulating ring is rotated in a uniform magnetic field about its own axis, thenA. Ring will experience a magnetic forceB. Ring must be experience a magnetic torqueC. Ring may experience a magnetic torqueD. None of the above
Answer» Correct Answer - C `tau=MB sin theta`, Rotating ring will behave as a magnetic pole.

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