A sphere of radius a is made of a nonconducting material that has a uniform volume charge density p.
A sphere of radius a is made of a nonconducting material that has a uniform volume charge density p. A spherical cavity of radius b is removed from sphere which is a distance z from the center of the sphere. Assume that a > z + b.
a) Find the magnitude and direction of the electric field at point y0 which is separated by distance yo from the center of the sphere.
b) Find the magnitude and direction of the electric field inside the cavity.
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