Two solid conducting spheres of radii `R_(1)` and `R_(2)` are kept at a distance `d (gt gt R_(1) and R_(2))` apart. The two spheres are connected by thin conducting wires to the positive and negative terminals of a battery of emf V. Find the electrostatic force between the two spheres

Answer

`(1)/(K)((R_(1)R_(2)V)/(d(R_(1)+R_(2))))^(2)`