A small conducting sphere of radius `r` is lying concentrically inside a bigger hollow conducting
Channel: Doubtnut
Date: 2021-11-02

A small conducting sphere of radius `r` is lying concentrically inside a bigger hollow conducting sphere of radius `R`. The bigger and smaller spheres are charged with `Q` and `q(Q gt q)` and are insulated from each other. The potential difference between the spheres will be