A solid conducting sphere of radius a carries a net positive charge 2Q. A conducting spherical shell of inner radius b and outer radius c is concentric with the solid sphere and car- ries a net charge -Q. Using Gauss's law, find the electric field in the regions labeled 0, 2, 3, and 4 in Figure 24.19 and the charge distribution on the shell when the entire sys- tem is in electrostatic equilibrium. T 2Q 1 a

A solid conducting sphere of radius a carries a net positive charge 2Q. A conducting spherical shell of inner radius b and outer radius c is concentric with the solid sphere and car- ries a net charge -Q. Using Gauss's law, find the electric field in the regions labeled 0, 2, 3, and 4 in Figure 24.19 and the charge distribution on the shell when the entire sys- tem is in electrostatic equilibrium. T 2Q 1 a