A charge `Q=(5)/(100)nC` is distributed over two concentric hollow spheres of radii `r=3` cm and `R=6cm` such that the densities are equal .Find the potential in volt at the common centre.

A charge q is distributed over two concentric hollow sphere of radii a and b(bgtc) such that the surface densities are equal.Find the potential at the common centre.is

A charge 'Q' is distributed over two concentric hollow spheres of radii 'r' and 'R' (gtr) such that the surface densities are equal. Find the potential at the common centre.

A charge Q is distributed over two concentric hollow spheres of radii r and R (gt r) such that the surface charge densities are equal. Find the potential at the common centre.

A charge Q is distributed over three concentric spherical shells of radii a, b, c (a lt b lt c) such that their surface charge densities are equal to one another. The total potential at a point at distance r from their common centre, where r lt a, would be :