Question

Circular current loop as a magnetic dipole derivation

Answer 1

"When an electric current flows in a closed loop of wire, placed in a uniform magnetic field, the magneticforces produce a torque which tends to rotate the loop so that area of theloop is perpendicular to the direction of the magnetic field. ... where pm = NIA is called the magnetic dipole moment of the loop."

Answer 2

The dipole moment of current loop (M)= no. of turns in coil(n)×current(I)× area of coil (A) or M=nIA M = n I A .