Question

the torque experienced by current carrying loop of magnetic moment m vector placed in a magnetic field B vector is.....
A) M × B
B) B × M
C) M/B
D) B/M

Answer 1

Torque(τ) is the twisting force that tends to cause rotation. The axis of rotation is the point where the object rotates.

the torque experienced by current carrying loop of magnetic moment m vector placed in a magnetic field B vector is given by option A as

τ = m x B

Hence torque is the vector cross product of magnetic moment m and magnetic field B.