A) A point charge Q1 lies at the center of a spherical conducting shell of inner radius a and outer raduis b. find the charge density on the two surfaces of the conduting shell if it has a net chargeQ2
B) charge is distributed with densityρ=ρ0r/a where ρ0 is a constant in the cylidrical region rC) charge is distributed with unifrom densityρ0C/m^3 in the region a