- #1

Anmoldeep

- 15

- 2

My book suggests defining P(potential energy) = M.B (dot product of magnetic moment and magnetic field)

I am familiar with the above formula for a varying angle between M and B but not for a varying magnetic moment. If it's true please help me in deriving it.

Suppose for the question

1.) Edge if Square loop is 'a'

2.) Current = I

3.) Magnetic field (Uniform and perpendicular to the plane of the loop)