Two concentric hollow spheres of radii R and 2R are charged

Last updated: 6/13/2023

Two concentric hollow spheres of radii R and 2R are charged The inner sphere has a charge of 1 C and the outer sphere has a charge of 2 C of the same sign The potential is 9000 V at a point P at a distance 3R from the common centre O What is the value of R