Задача id16227

A sphere of radius R is charged with charge Q. It is surrounded by an uncharged metal spherical layer with radii R1 and R2. Determine the field E and potential φ at points A, B, C (Fig.). The distances from the center of the sphere to points A, B, C are known: rA) rB, rC. Draw a graph of the electrostatic field and potential versus distance r.

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