Two charges spheres are separated at a distance d exert a force `F` on each other. If charges are doubled and distance between them is doubled then the force is (a) F .(b) F/2 (c) F/4 .(d) 4F

Two charges of equal magnitudes and at a distance r exert a force F on each other. If the charges are halved and distance between them is doubled, then the new force acting on each charge is

Two charge spheres separated at a distance d exert a force F on each other. If they are immersed in a liquid of dielectric constant K=2, then the force (if all conditions are same) is

How is force between two charges affected when each charge is doubled and distance between them is also doubled?

[" Two charges of equal magnitude "],[" and at a distance 'r' exert a force 'F' "],[" on each other.If one of the charges "],[" doubled and distance between them "],[" is halved,the new force acting on "],[" each charge is "],[[" (A) "(F)/(8)],[" (B) "(F)/(4)],[" (C) ",8F],[" (D) "(F)/(16)]]

A charge Q exerts a 12 N force on another charge q. If the distance between the charges is doubled, what is the magnitude of the force exerted on Q by q?

Two point charges separated by a distance d repel each other with a force of 9N. If the separation between them becomes 3d, the force of repulsion will be