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Unformatted text preview: but what surface should we choose? (Hint: remember that the electric field inside a conductor is zero). Once you have chosen this surface, it is easy to see what the induced charge on the inner surface must be (use Gauss law with the surface from (a)). (b) Now you can calculate the charge on the outer surface (Hint: Remember, the metal shell is electrically neutral). (c) Next consider a similar problem. A conducting spherical shell has an excess charge of +10 C. A point charge of -15 C is placed at the center of the shell. Use Gauss law to calculate the charge on the inner and outer surfaces of the shell, choose one of the answers below: (i) Inner surface +15 C, Outer surface +10 C (ii) Inner surface 0, Outer surface +10 C (iii) Inner surface +15 C, Outer surface -5 C...
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