Which of the following gives the magnitude of torque acting on a coil of turns and…

PHYSICS · Single correct · CBSE · Physics · Moving Charges and Magnetism · Moving Charges and Magnetism

Problem

Which of the following gives the magnitude of torque acting on a coil of

N

turns and area

A

carrying current

I

when its plane makes an angle

\theta

with a uniform magnetic field

B

? (a)

\tau = NIAB\sin\theta

(b)

\tau = NIAB\cos\theta

(c)

\tau = NIAB

(d)

\tau = NIAB\sin 2\theta