The nonconducting sphere of Example 22-4 in the textbook has a spherical cavity of radius r1 centered at the sphere’s center (see the figure).(Figure 1) The charge Q is distributed uniformly in the “shell” (between r = r1 and r = r0). Suppose in the figure there is also a charge q0 at the center of the cavity.
a). Determine the electric field for 0 < r < r 1.
b). Determine the electric field for r 1 < r < r 0.
c). Determine the electric field for r > r 0.
