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Gauss's Law

45. A solid spherical insulator centered about the origin with negative charge -6Q has
radius a and non-uniform charge density p = -Br, where ß is a positive constant.
Concentric with the spherical insulator is a thick spherical conducting shell of inner radius
b, outer radius c, and total charge +4Q. Derive an expression for the electric field in each
region.
-60
IV

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