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A thick conducting spherical shell of in...


A thick conducting spherical shell of inner radius a and outer radius b is shown in figure. It is observed that the inner face of the shell carries a uniform charge density `-sigma`. The outer surface also carries a uniform surface charge density `+sigma`.
(a) Can you confidently say that there must be a charge inside the shell? Find the net charge present on the shell. (b) Find the potential of the shell.

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