[" 18.Three concentric spherical shells have radii "a,b" and "],[c(a

Three concentric spherical shells have radii a, b and c(a lt b lt c) and have surface charge densities sigma, -sigam 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 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 = q + b , we have

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 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-

Three concentric spherical metal shells A, B and C of radii a,b and c(a lt b lt c) have surface charge densites +sigma,-sigma and +sigma , respectively. If shells A and C are at same potential, obtain the relation between radii a,b and c.

Three concentric spherical metal sheels A,B and C of radii a,b and c a'<'b'<'c have surface charge densities +sigma, -sigma and +sigma respectively. If the shells A and C are at the same potential, obtain the relation between the radii a,b and c.

Three concentric spherical metal sheels A,B and C of radii a,b and c a'< 'b'<'c have surface charge densities +sigma, -sigma and +sigma respectively. Find the potentials of three sheels A,B and C.