A thin metallic spherical shell of radius R carries a charge Q on its surface. A point charge Q/2 is placed at its centre C and on an other charge +2Q is placed outside the shell at distance x from the centre.
Find (i) the force on the charge at the centre of shell and at the point A. (ii) the electric flux through the shell.

Dear Student,

(2) Since the total charge enclosed by the shell is,qen=Q2The total flux according to Gauss's law is, ϕ=qenε0ϕ=Q2ε0=Q2ε0

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