1. The problem statement, all variables and given/known data A solid, insulating sphere of radius a has a uniform charge density 1 and a total charge Q. Concentric with this sphere is an uncharged, conducting hollow sphere whose inner and outer radii are b and c, Find the magnitude of the electric field in the regions r=b and r= c? 2. Relevant equations 3. The attempt at a solutionIm stuck finding the charge there my guess is that since there is a charge one in the insulating sphere and none on the conducting one then the charge on b and on c must be 1 as well? Im somewhat confusing, please any comment?