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Physics, 09.11.2019 22:31 salmamontero1998

Asolid metallic sphere of radius a carries total charge q. no other charges are nearby. the electric field just outside its surface is keq/a2 radially outward. at this close point, the uniformly charged surface of the sphere looks exactly like a uniform flat sheet of charge. what is the electric field strength inside the metallic sphere at r = a/2? use σ = q/4 π a2.

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