First slide
Magnetic Dipole moment

A circular coil of radius 4 cm has 50 turns. In this coil a current of 2 A is flowing. It is placed in a magnetic field of 0.1 weber / m2. The amount of work done in rotating it through 180° from its equilibrium position will be 


Work done to rotate  W=MB1cosθ
When  θ=180o                      W=2MB
Here M = niA
          W = 2.niAB



Get Instant Solutions
When in doubt download our app. Now available Google Play Store- Doubts App
Download Now
Doubts App