Solution: (a) How many excess electrons must be distributed
Chapter 22, Problem 22.52(choose chapter or problem)
(a) How many excess electrons must be distributed uniformly within the volume of an isolated plastic sphere 30.0 cm in diameter to produce an electric field of magnitude 1390 N>C just outside the surface of the sphere? (b) What is the electric field at a point 10.0 cm outside the surface of the sphere?
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