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Energy stored in spherical and surface charge distribution.

See attached file for full problem description. Only problems # 3 and #4.


Solution Summary

The posting has two solutions. One is about the total electrostatic energy stored due to a spherical charge distribution inside and out side the sphere. The second solution is a good question about the field due to two unequally charged sheets on either sides and in the middle of the sheets. With that the graph between the position and the field strength is also showed.