A dipole is placed parallel to the electric field. If W is the work done in rotating the dipole by 60° then work done in rotating it by 180° is

A bar magnet is initially parallel to the magnetic field in which it is placed. Work done u rotate it by 60^(@) is 2.6 J. Work done in rotating it further by 30^(@) will be

An electric dipole of dipole moment P is lying along uniform electric field E. The work done in rotating the dipole by 37° is

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

An electric dipole is placed in a uniform electric field. The dipole will experience

Two opposite and equal chrages 4 xx 10^(-8) coulomb when placed 2 xx 10^(-2) cm away, from a dipole. If dipole is placed in an ecternal electric field 4 xx 10^(8) newton//coulomb, the value of maximum torque and the work done in rotating it through 180^(@) will be