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 a) the inner surface b) the outer surface
Correct option is D) When a charge +q is placed at the centre of spherical cavity as shown in figure. Charge included o the inner surface of shell =−q.....(i) Charge induced on the outer surface of shell =+q.....(ii) ∴ Surface charge density on the inner surface =4πR22+q
