Electric Field Due to Charge Distributions - Approach
A metallic sp...
A metallic spherical shell has an inner radius R1 and outer radius R2. A charge Q is placed at the centre of the spherical cavity. What will be surface charge density on (i) the inner surface, and (ii) the outer surface?
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When a charge +Q is placed at the centre of spherical cavity, The charge induced on the inner surface =+Q The charge induced on the outer surface =+Q ∴ Surface charge density on the inner surface =−Q4πR21 Surface charge density on the outer surface =+Q4πR22.