1. The problem statement, all variables and given/known data [PLAIN]http://lulzimg.com/i23/62babd.jpg [Broken] 2. Relevant equations 3. The attempt at a solution im not sure why this is an answer. The first part I noticed is that it is an insulating sphere. Insulator means that all the charges cant leave the sphere. What i do know is that in a conducting sphere, charges go to the surface and the field of any distance inside the sphere is 0. Thus, I'm assuming the insulator has some effect on this..