What is a magnetic dipole? Obtain for the strength of magnetic field at a point at distance r from its centre on axial line.
Find the strength of the field in special case, when the length of the magnet is very small as compared to the distance r.

What is a magnetic dipole? Obtain for the strength of magnetic field at a point at distance r from its center on eqitorial line. Find the strength of the field in special case, when the length of the magnet is very small as compared to the distance r.

What is magnetic dipole? Obtain the an expression for strength of magnetic field at a distance r from its centre on the axial line of the dipole.

What is a solenoid .On what factors does the strength of magnetic field depends? What is its main use?

What is magnetic dipole? Derive an expression for magnetic field intensity at a point on the equitorial line of a bar magnet.

what happens to the strength of magnetic field if currnt flowing in the wire is inereased?

A bar magnet of length 0.1 m has a pole strength of 50 A m. Calculate the magnetic field at distance of 0.2 m from tis centre on its axial line