Charge on a Grounded Concentric Sphere
A conducting sphere of radius r is surrounded by a concentric conducting shell of radius 2r. The sphere initially has a charge of +Q, and the shell has a charge of -Q. If the inner sphere is then connected to the ground by a wire, what is its final net charge?
A
Inner sphere retains charge +Q
B
Inner sphere acquires charge Q/2
C
Inner sphere acquires charge -Q
D
Inner sphere acquires charge -Q/2
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