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

Direction of Magnetic Field

Direction of Magnetic Field

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

The work done in deflecting a dipole through 180^(@) from field direction is

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

When a negative charge moves in a direction opposite to the direction of an electric field,