Two charges, each equal to q, are kept at x = – a and x = a on the x-axis. A particle of mass m and charge...

Question

Two charges, each equal to q, are kept at x = – a and x = a on the x-axis. A particle of mass m and charge q_0 = q 2 is placed at the origin. If charge q_0 is given a small displacement (y << a) along the y-axis, the net force acting on the particle is proportional to -

Accepted Answer

(3)

JEE Main 2013 Physics question

Solution