a hollow sphere having uniform charge density p(charge per unit volume).Find the potential difference between A and B (A is at inside surface, B is at outer surface)outer radius is b and inner radius is a

The potential due to acharged spherical shell v=14πε0 qr,where q is the charge , ε0 thepermittivity of the free space and r the radius of the spherical shell.We are given a hollow sphere of inner radius a and outer radius b, also given space charge density ρ.The charge on the hollow sphere q= ρ 4πb3-a33.The potential on the inner surface VA=14πε0×ρ4πb3-a33×1a.Similarly potential on the outer surface VB=14πε0×ρ4πb3-a33×1b.The potential difference between A and B=VB-VA=14πε0×4πb3-a33×1b-1a.Therefore VB-VA =ρ3ε0×b3-a31b-1a.

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