Why Coulombian force is called two body force ?
Four charges are arranged at the corners of a square $ABCD$, as shown. The force on a $+ve$ charge kept at the centre of the square is
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
Identify the wrong statement in the following. Coulomb's law correctly describes the electric force that
By using Coulomb’s law, define unit charge.
According to Coulomb's Law, which is correct relation for the following diagram?