A short bar magnet has a magnetic moment of `0.48 JT^(-1)`. Give the direction and magnitude of the magnetic field produced by the magnet at a distance of 10 cm from the centre of the magnet on (a) the axis, (b) the equatorial lines (normal bisector) of the magnet.

Draw the magnetic field lines around a bar magnet.

Draw magnetic field lines around a bar magnet.

Magnetic field B on the axis of a circular coil and far away distance x from the centre of the coil are related as :

For a short magnetic dipole of magnetic moment 0.5 Am^(2) . Find the magnetic field at a point ( a) 1 m on the axis and from the cetre of the magnet ( dipole ) ( b) 1 m on the equatorial line from the centre ( c) at an angle of 60^(@) w.r. to the line joining the point and the centre of the dipole at distance 1 m.

What is the direction of magnetic field lines inside a bar magnet and outside of it .

A bar magnet of magnetic moment 1.5 JT^(-1) lies aligned with the direction of a uniform magnetic field of 0.22 T. (a) What is the amount of work required by an external torque to turn the magnet so as to align its magnetic moment: (i) normal to the field direction (ii) opposite to the field direction? (b) What is the torque on the magnet in cases (i) and (ii)?

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

Give the expression for the magnitude of magnetic flux density along the axis of solenoid in terms of magnetic moment. Give the meaning of the symbols used.