A magnetised needle of magnetic moment `4.8xx10^(-2)JT^(-1)` is placed at `30^@` with the direction of uniform magnetic field of magnitude `3xx10^(-2)T`. Calculate the torque acting on the needle.

A bar magnet of magnetic moment 6J.T^(-1) is aligned at 60^(@) with a uniform external magnetic field of 0.44T . Calculate the torque on the magnet in the final orientation in case (ii).

The Plane of a suspended current carrying rectangular coil makes an and theta with the direction of uniform magnetic field. Calculate the torque acting on the coil.

The plane of a suspended current carrying rectangular coil makes an angle theta with the direction of uniform magnetic field. Calculate the torque acting on the coil.

A bar magnet of magnetic moment 6J.T^(-1) is aligned at 60^(@) with a uniform external magnetic field of 0.44T . Calculate the work done in turning the magnet to align ist magnetic moment (i) normal to the magnetic field , (ii) opposite to the magnetic field

A short bar magnet of magnetic moment 5.25xx10^(-2)J.T^(-1) is placed with its axis perpendicular to the earth's magnetic field . At what distance from the centre of the magnet , the magnet , the resultant field is inclined at 45^(@) with the earth's field on its axis Ignore the length of the magnet in comparison to the distance involved .

A torque of 8 units is applied on a magnet when it is kept at 30^(@) with the direction of a uniform magnetic field of intensity 0.32 units . Determine the magnetic moment of the magnet .

A short bar magnet of magnetic moment 5.25xx10^(-2)J.T^(-1) is placed with its axis perpendicular to the earth's magnetic field . At what distance from the centre of the magnet , the magnet , the resultant field is inclined at 45^(@) with the earth's field on its normal bisector

A square coils of side 10 cm consists of 20 turns and carries a current of 12A. The coil is suspended vertically and the normal to the plane of the coil makes an angle of 30^(@) with the direction of a uniform horizontal magnetic field of magnitude 0.80T . What is the magnitude to torque experienced by the coil ?