2r 3. Suppose that a sphere of radius 2r and uniform volume charge density p is composed of a nonconducting material (charges remain in place). A cavity of radius r is then carved out as shown above. Show that the net electric field in the positive +â direction (or any direction for that matter) is given by гр E = 3€0
2r 3. Suppose that a sphere of radius 2r and uniform volume charge density p is composed of a nonconducting material (charges remain in place). A cavity of radius r is then carved out as shown above. Show that the net electric field in the positive +â direction (or any direction for that matter) is given by гр E = 3€0
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Transcribed Image Text:2r
3. Suppose that a sphere of radius 2r and uniform volume charge density p is
composed of a nonconducting material (charges remain in place). A cavity of
radius r is then carved out as shown above. Show that the net electric field in
the positive +â direction (or any direction for that matter) is given by
E =
3€0
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