Surface Charge Density on a Conducting Shell

Question

A hollow conducting shell has an inner radius $$a$$, an outer radius $$b$$, and a net charge of $$-Q$$. A point charge $$+q$$ is located at the center of the shell. Determine the surface charge density, $$\sigma$$, on the outer surface of the shell.

Accepted Answer

$$\sigma = \frac{-Q+q}{4\pi b^2}$$

Answer

$$\sigma = \frac{-(Q+q)}{4\pi b^2}$$

Answer

$$\sigma = \frac{-Q}{4\pi (b^2 - a^2)}$$

Answer

$$\sigma = \frac{-Q}{4\pi b^2}$$

Surface Charge Density on a Conducting Shell

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