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Three concentric conducting spherical shells have radii a, b, and c such that a < b...

Three concentric conducting spherical shells have radii a, b, and c such that a < b < c. Initially the inner shell is uncharged, the middle shell has a positive charge +Q, and the outer shell has a negative charge –Q. (a) Find the electric potential of the three shells. (b) If the inner and outer shells are now connected by a wire that is insulated as it passes through the middle shell, what is the electric potential of each of the three shells, and what is the final charge on each shell? (15%)

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