Three concentric spherical metallic shells X,Y and Z of radius a, b and c respectively [a `lt`b`lt`c] have surface charge densities `sigma`,-`sigma` and `sigma` respectively.The shells X and Z are at same potential.If the radii of X & Y are 2 cm and 3 cm, respectively.The radius of shell Z is________cm.

Three concentric spherical metallic spheres A,B and C of radii a , b and c(a lt b lt c) have surface charge densities sigma , -sigma and sigma respectively.

Three concentric metallic spherical shells A,B and C of radii a,b and c(a lt blt c) have surface charge densities -sigma ,+sigma and -sigma respectively ,the potential of shell A is

Three concentric metallic spherical shell A,B and C or radiin a, b and C (a lt bgt C) have surface charge densities - singama, + sigma , and - aigba respectively . The potential of shell A is :

Three concentric spherical shells have radii a, b and c(a lt b lt c) and have surface charge densities sigma, - sigma and sigma respectively. If V_(A), V_(B) and V_(C) denote the potentials of the three shells, then for c = a + b , we have

Three concentric spherical metallic shells A, B and C of radii a, b and c (a lt b ltc) have surface charge densities sigma , -sigma and sigma respectively. (i) Find the potential of the three shells A, B and C. (ii) If the shells A and C are at the same potential, obtain the relation between the radii a, b and c.

Three concentric spherical shells have radii a,b and c(a lt b lt c) and have surface charge densities sigma, - sigma and sigma respectively. If V_(A),v_(B) and V_(c) denote the potentials of the three shells, then, for V_(A) = V_(C) , we get-