An electric charged q exerts a force F on a similar electric charge q swparated by a distance r. A third charge `q//4` is placed midway between the two charges. Now the force F will

Two point charges Q and - Q //4 are separated by a distance X . Then . force between this two charge

Two point charges +q and -q are placed a distance x apart. A third charge is so placed that at the three charges are in equilibrium. Then

Two equal charges of magnitude Q each are placed at a distance d apart. Their electrostatic energy is E. A third charge -Q//2 is brought midway between these two charges. The electrostatic energy of the system is now

Electrical force is acting between two charge kept in vacuum. A copper plate is placed between the charges, the force now is

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?

A charge q _1 exerts some force F _1 on a second charge q _2. If a third charge q _3 is brought near, the force of q _1 on q _2 changes.

Two free charges q and 4q are placed at a distance d apart A third charge Q is placed between them at a distance x from charge q such that the system is in equilibrium. Then