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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 clectric ficld (a) for all points outside the spherical shcll and (b) for a point inside the shell a distance $r$ from the centsr.

$\frac{\overline{k_{e} q}}{r^{2}}$

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Cornell University

Numerade Educator

Hope College

McMaster University

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