Two equally charged small metal balls placed at a fixed distance experience a force F. A similar unchanged metal ball after touching one of them is placed at the middle point between the two balls. The force experienced by this ball is

Two equally charged identical small balls kept some fixed disttance apart exert a repulsive force F on each other. A similar uncharged ball, after touching one of them is placed at the mid-point of line joining the two balls. Force experienced by the third ball is

A charged metallic ball is lowered into an insulated metal can. The ball is made to touch bottom of the can. Then it is placed on the disc of electroscope shown below. Final

Two equal and opposite charges are placed at certain distance apart and force of attraction between them is F .If 75% charge of one " is transferred to another then the force between the charges becomes ..??

Two charged balls attract each other with a certain force. If they are allowed to touch and then get separated to the same distance apart, the balls will:

Two identical metals balls with charges +2Q and -Q are separated by some distance and exert a force F on each other . They are joined by a conducting wire , which is then removed. The force between them will now be

Three small equally charged identical conducting balls are suspended from identical insulating threads secured at one point. Length (L) of the threads is large compared to the equilibrium separation (a) between any two balls. (a) One of the balls is suddenly discharged. Find the separation between the charged balls when equilibrium is restored. Assume that the threads do not interfere and balls do not collide. (b) If two of the balls are suddenly discharged, how will the balls behave after this? Find the separation between the balls when equilibrium is restored. The threads do not interfere

calculate the change in electrostatic force between the two balls, if charge on both the balls are increased by 10%.

Two small balls carrying charges +9 mu C" and -4 mu C attract each other with a force "F" .If a charge of -5 mu C is added to each one of them,then the force between the balls would become