Question

This is a cross section of two nested spheres. The outer sphere is a thin conductor of radius M with a uniform charge distribution and total excess charge of-20. The inner sphere is a solid insulator of radius J. It has a uniform volume charge density of p and a total charge of +2Q. There is only vacuum between them. Region C +2Q,+p 1.) (2pts) Determine the net charge on the inner and outer surfaces of the thin shell. Region B Region A 2.) (3pts) Determine the electric field in all three regions of space as a function of r, the distance from the mutual center. Use only Q, p, r, k, J or M your expressions. You may use any or all of these as needed. 3.) (1pt) Draw a graph of E-field vs. r from r=0 to r=2M. The graph doesn't have to be to scale, but it should have the correct shape. 4.) (2pts) Calculate the electric potential change when moving from J to M.

Answer 1

1) Net charge =-2 +2 + 一

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5) Capacitance b/w arrangement Sehat C= 9 kach - (A - -