A magnet is suspended in a uniform magnetic field by a thin wire. On twisting the wire through half revolution, the magnet twists through `30^(@)` from the original position. How much should we rotate the wire in order to twist the magnet through `45^(@)` from its original position

If a bar magnet moment M is freely suspended in a uniform magnetic field of strength field of strength B, then the work done in rotating the magent through an angle theta is

A bar magnet is suspended in a uniform magnetic field in a position such that it experiences maxiumum torque. The angle through which it must be rotated from this position such that it experiences half of the maximum torque. The angle through which it must be rotated from this positon such that it experiences half of the maxium troque is

The magnetic field at the origin due to the current flowing in the wire is

For a coil rotating in a uniform magnetic field, in which position of the coil is the emf induced in the maximum? What is the magnetic flux through the coil in this position?

A magnet is parallel to a uniform magnetic field. The work done in rotating the magnetic through 60^(@) is 8xx10^(-5) J . The work done in rotating through another 30^(@) is

A "bar" magnet is at right angles to a uniform magnetic field. The couple acting on the magnet is to be one fourth by rotating it from the position. The angle of rotation is

A magnet is suspended in the magnetic meridian with an untwisted wire. The upper end of wire is rotated through 180^(@) to deflect the magnet by 30^(@) from magnetic meridian. When this magnet is replaced by another magnet, the upper end of wire is rotated through 270^(@) to deflect the magnet 30^(@) from magnetic meridian. The ratio of magnetic moment of magnets is

A bar magnet of magnetic moment M_(1) is suspended by a wire in a magnetic field. The upper end of the wire is rotated through 180^(@) , then the magnet rotated through 45^(@) . Under similar conditions another magnetic of magnetic moment M_(2) is rotated through 30^(0) . Then find the ratio of M_(1)&M_(2) .