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A +30mc charge is placed on a metallic sphere of 1.0cm radius. The sphere is surrounded by a spherical thick metallic shell, of 4.0cm inner radius and 2.0cm thickness from same center. The net charge on the shell is -50mc.

a) Determine the location of the 0 Volt equipotential surface.

b) calculate the electric potential of each of the two conductors

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