A point charge q is located at the center of a spherical shell of radius a that has a charge -q uniformly distributed on its surface. Find the electric field, (a) for all points outside the spherical shell and (b) for a point inside the shell a distance r from the center.
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A point charge q is located at the center of a spherical shell of radius a that has a charge -q uniformly distributed on its surface. Find the electric field, (a) for all points outside the spherical shell and (b) for a point inside the shell a distance r from the center.
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