A Solid Non-Conducting Sphere of Radius R Carries a Charge

question 44

Essay

A solid non-conducting sphere of radius R carries a charge Q₁ distributed uniformly. The sphere is surrounded by a concentric spherical shell of inner radius R_a and outer radius R_b. The shell carries a total charge Q₂ distributed uniformly in its volume. What is the net electric field at a radial distance r such that R < r < R_a?

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