A) \[\tau =niAB\cos \theta \]
B) \[\tau =niAB\sin \theta \]
C) \[\tau =niAB\]
D) None of the above, since the magnetic field is radial
Correct Answer: A
Solution :
Plane of coil is having angle \[\theta \] with the magnetic field. \[\therefore \ \tau =MB\sin (90-\theta )\] or \[\tau =niAB\cos \theta \] [As M =niA]You need to login to perform this action.
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