Two charges, each equals to … are kept at … and … on the …-axis. A particle of mass … and charge … is placed at the origin. If charge … is given a small displacement … along the …-axis, the net force acting on the particle is proportional to

Electrostatics

JEE Main 2013 · Session, Shift 1 · Q6918

PhysicsMedium46×since 2002Q6918

Two charges, each equals to

q,

are kept at

x=-a

and

x=a

on the

x

-axis. A particle of mass

m

and charge

{q_0} = {q \over 2}

is placed at the origin. If charge

{q_0}

is given a small displacement

\left( {y < < a} \right)

along the

y

-axis, the net force acting on the particle is proportional to