Force of interaction between two co-axial short electric dipoles whose centres are R distance apart varies as

Show that the force of attraction between two short magnets of moment m and m' with their centres d distance apart and their axes in the same direction along the same lines is (mu_(0))/(4pi) (6mm')/(d^(4))

The force between two short electric dipoles separated by a distance r is direcly proportional to :

The electrostatic potential due to an electric dipole at a distance 'r' varies as

Force of attraction between two point electric charges placed at a distance d in a medium is F . What distance apart should these be kept in the same medium, so that force between them becomes F//3 ?

The force between two electrons separated by a distance r varies as

Find the force of interaction of two dipoles , if the two dipole moments are parallel to each other and placed at a distance x apart

The electric field and the potential of an electric dipole vary with distance r as