1. The problem statement, all variables and given/known data Two concentric spheres have radii a and b with b>a. The region between them is filled with charge of constant density. The charge density is zero everywhere else. Find E at all points and express it in terms of the total charge Q. Do your results reduce to the correct values as a->0? 2. Relevant equations Flux=EA 3. The attempt at a solution My line of thinking: The flux is independent of the radius because with two concentric circles it only depends on the charge enclosed by the sphere. The flux is then the same for both areas and it is equal to Q/eo. I'm not giving what the density charge is, so isn't my answer simply Q/eo? Any help would b appreciated. Thank you. I'm not looking for the solution, I guess I need to know if my line of thinking is correct in any way?