A thin nonconducting spherical shell of radius R 1 carries a total charge q 1 that is uniformly distributed on its surface. A second, larger thin non -conducting spherical shell of radius R2 that is concentric with the first carries a charge q2 that is uniformly distributed on its surface.
(a) Use Gauss's law to find the electric field in the regions r < r1, r1< r < r2 and r > R2. (Use any variable or symbol stated above along with the following as necessary: k.)
E→(r < r1)=
E→(r1< r < r2)=
E→(r > R2) =
(b) What should the ratio of the charges q1/q2 and their relative signs be for the electric field to be zero for r > R2?
q1/q2 =
(c) Sketch the electric field lines for the situation in part (b) when q1 is positive. (Do this on paper. Your instructor may ask you to turn in this work.)