question archive A solid insulating sphere of radius a carries a net positive charge 3Q , uniformly distributed throughout its volume

A solid insulating sphere of radius a carries a net positive charge 3Q , uniformly distributed throughout its volume

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A solid insulating sphere of radius a carries a net positive charge 3Q , uniformly distributed throughout its volume.

Concentric with this sphere is a conducting spherical shell with inner radius b and outer radius c, and having a net charge -Q , as shown in Figure P24.55. (a) Construct a spherical gaussian surface of radius r > c and find the net charge enclosed by this surface. (b) What is the direction of the electric field at r > c? (c) Find the electric field at r > c. (d) Find the electric field in the region with radius r where c > r > b. (e) Construct a spherical gaussian surface of radius r, where c > r > b, and find the net charge enclosed by this surface. (f) Construct a spherical gaussian surface of radius r, where b > r > a, and find the net charge enclosed by this surface. (g) Find the electric field in the region b > r > a. (h) Construct a spherical gaussian surface of radius r < a, and find an expression for the net charge enclosed by this surface, as a function of r.  (i) Find the electric field in the region r < a. ( j) Determine the charge on the inner surface of the conducting shell. (k) Determine the charge on the outer surface of the conducting shell. (l) Make a plot of the magnitude of the electric field versus r.

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