Define equatorial line of a bar magnet.

Write an expression of magnitude of magnetic field at point lies on equatorial line of a bar magnet.

Derive an expression for magnetic field induction on the equatorial line of a barmagnet.

Scalar potential on the equatorial line of a bar magnet is :

What is the magnetic field along the axis and equatorial line of a bar magnet ?

The direction of the null point is on the equatorial line of a bar magnet, when the north pole of the magnet is pointing