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Presentation transcript:

A Charged, Thin Sheet of Insulating Material

1) There is a conducting spherical shell, inner radius A and outer radius B. If you put a charge Q on it, find the charge density everywhere. 2) There is a conducting spherical shell, inner radius A and outer radius B. A charge Q is put at the center. If you put a charge Q 2 on the shell, find the charge density everywhere.

Electric field near a surface of a conductor a

d a (the total field at any point between the plates) Two parallel conducting plates

An Apparent Contradiction

Near the surface of any conductor in electrostatics