If 'W' Joule is the work done in rotating the magnet from the field direction to a position that makes an angle 60' with the direction of the field, the torque required to hold the magnet in that direction is

Direction of Magnetic Field

The work done in rotating a magnet of magnetic moment 2A-m^(2) in a magnetic field to opposite direction to the magnetic field, is

The work done in rotating the magnet form the direction of uniform field to the opposite direction to the field is W . The work done in rotating the magnet form the field direction to half the maximum couple position is

Direction of magnetic field at equatorial point

What is the torque acting on a magnet of magnetic moment M held at an angel theta with the direction of magnetic field B?

A rectangular coil of wire carrying a current is suspended in a uniform magnetic field. The plane of the coil is making an angle of 30^(@) with the direction of the field and the torque experienced by it is tau_(1) and when the plane of the coil is making an angle of 60^(@) with the direction of the field the torque experienced by it is tau_(2) . Then the ratio tau_(1):tau_(2) is

The work done in turning a magnet normal to field direction from the direction of the field is 40xx10^(-6)J . The kinetic energy attained by it when it resches the field direction when released is