Question

Force of attraction between two point charges blosed
at a distance d is F. What distance a part should they
kept in the same medium so that the force between
them is F/3?
​

Answer 1

Answer:

root 3 d

Explanation:

Let the changes be q1 and q2

When kept ′d′ distance apart, they experience columbic force 

Given by,

F=kd2q1q2(k=4πϵ01)

When charges get separated by d′, force reduces to F/3.

⇒3F=kd‘2q1q2

From above,

3d2=d′2⇒d′= root 3d (Ans)