A solid conducting sphere of radius $a$ has a net positive charge $2Q$. A conducting spherical shell of inner radius $b$ and outer radius $c$ is concentric with the solid sphere and has a net charge $- Q.$ The surface charge density on the inner and outer surfaces of the spherical shell will be [image:1_image98.emf]

Question

Dr. Abubacker · Accepted Answer

(a) Surface charge density $(\sigma) = \ \frac{Charge}{surface\ area}$
[image:1_image308.emf]
So $\sigma_{inner} = \frac{- 2Q}{4\pi b^{2}}$
And $\sigma_{Outer} = \frac{Q}{4\pi c^{2}}$

Q. A solid conducting sphere of radius $a$ has a net positive charge $2Q$. A conducting spherical shell of inner radius $b$ and outer radius $c$ is concentric with the solid sphere and has a net charge $- Q.$ The surface charge density on the inner and outer surfaces of the spherical shell will be

Explanation

Reviewed by Dr. Abubacker

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