question_answer

The expression for the torque acting on a coil having area of cross-section A, number of turns n, placed in a magnetic field of strength B, making an angle \[\theta \] with the normal to the plane of the coil, when a current i is flowing in it, will be [MP PET 1996]

A)            \[ni\,AB\tan \theta \]      

B)            \[ni\,AB\cos \theta \]

C)            \[ni\,AB\sin \theta \]       

D)            \[ni\,AB\]