A magnetized needle of magnetic moment 4.6 × 10-2 JT-1 is placed at 30o with the direction of a uniform magnetic field of strength 4 × 10-2 T.
a. What is the torque acting on it ?
b. How much work is required for it to make a 120o angle with the magnetic field?

Asked by Topperlearning User | 20th May, 2015, 02:09: PM

Expert Answer:

Answered by  | 20th May, 2015, 04:09: PM