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

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 = q + b`, we have
A. `V_(C) = V_(A) ne V_(B)`
B. `V_(C) = V_(B) ne V_(A)`
C. `V_(C) ne V_(B) ne V_(A)`
D. `V_(C) = V_(B) = V_(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. I

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