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# Charge on Conducting Concentric Spheres

EANDM-PETK17

The figure below shows a charged conducting sphere with charge $Q_1=+3 C$ at the center of conducting spherical shell with total charge $Q_2=-2 C$.

What is the charge on the inner wall and outer surface of the conducing spherical shell?

A

Inner wall: +3 C
Outer surface: -2 C

B

Inner wall: -3C
Outer surface: +2C

C

Inner wall: -3 C
Outer surface: +1 C

D

Inner wall: +2 C
Outer surface: -1 C