Question

An identical metal sphere b has a charge of 2q. the magnitude of the electric force on b due to a is f. the magnitude of the electric force on a due to b must be

Answer 1

An identical metal sphere b has a charge = 2q
magnitude of the electric force on b due to a = f
magnitude of the electric force on a due to b = ?
The magnitude of the electric force on a due to b is also f, the forces are of same magnitude as this force will be attractive in nature.