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\begin{figure}\centerline{ \psfig{file=problems/problem_00003.eps,height=2.5in} }\end{figure}

Two concentric spherical conducting shells of radii $R_1$ and $R_2$ are arranged as shown. The inner shell is given a total charge $+Q$. The outer shell is grounded (connected to a conductor at zero potential) as shown.

Find the potential and field at all points in space. Show all work - don't just write down answers even if you can ``see'' what the answers must be.

Robert G. Brown 2003-02-09