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gaussian surfaces and flux a neutral conducting sphere is centered at the origin and has an...

gaussian surfaces and flux

a neutral conducting sphere is centered at the origin and has an inner radius of a and an outer radius if b. at the center of the cavity is a point charge q. what is the formula for the electric field in the folkiwing three regions?

o<r<a
a<_r<_b
b<r

repeat provlem assuming that the shell has a net charge of -q.

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