Two connectric spheres of radii `R` and `r` have similar charges with equal surface charge densities `(sigam)`. The electric potential at their common centre is

Two concentric spheres of radii R and r have similar charges with equal surface charge densities (sigma) . The electric potential at their common centre is

Two concentric spheres kept in air have radii R and r. They have similar charge and equal surface charge density sigma . The electrical potential at their common centre is (where, epsi_(0) = permittivity of free space)

Two concentric spheres kept in air have radii R and r. They have similar charge and equal surface charge density sigma . The electrical potential at their common centre is (where, epsi_(0) = permittivity of free space)

Two concentric spheres of raddi R and r have positive charges q_(1) and q_(2) with equal surface charge densities. What is the electric potential at their common centre?

A charge .q. is distrubuted over two concertric hollow conducting sphere of radii r and R (lt r) such that their surface charge densite are equal. The potential at their common centre is