A metallic spherical shell has an inner radius R_{1} and outer radius R_{2}. A charge Q is placed at the centre of the shell. What will be the surface charge density on the (i) inner surface, and (ii) outer surface of the shell?

 

 

Answers (1)
S safeer

(i) Surface charge density on the inner surface will be 

\therefore \sigma =\frac{-Q}{4\pi (R_{1})^{2}} where, R_{1} is the radius of the inner surface.

(ii) Surface charge density on the outer surface will be  

\therefore \sigma =\frac{+Q}{4\pi (R_{2})^{2}} where, R_{2} is the radius of the outer surface.

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