Magnetic Dipole Moment of a Coil

Description:

If current is flowing in a coil it behaves like a magnet. If the current if flowing in anticlockwise direction it behaves like a north pole and if the current is flowing in clockwise direction it behaves like a south pole.

Magnetic dipole moment gives the effectiveness of a magnet.

Magnetic dipole moment depends upon the pole strength.

Magnetic dipole moment creates magnetic field.

Magnetic field at a distance ‘r’ from the center of bar magnet is -

Where,

M = magnetic dipole moment of bar magnet.

Magnetic field at a distance ‘r’ from the center of current carrying circular coil is -

Where,

M = magnetic dipole moment of current carrying circular coil.

The product of current (I) flowing in the loop and the area (A) of the loop is called magnetic dipole moment (μ),

μ = NI→A→

Where,

N= number of turns

Where direction of area vector will be same as that of the direction of magnetic field at the center of loop.