1. The problem statement, all variables and given/known data 2. Relevant equations There are no equations here, only theoretical knowledge 3. The attempt at a solution Hi, My approach was this: I know that with the positive charge on the sphere being lowered into the cup I will have the inner area of the cup have a negative charge and the outer area will have a positive charge as the positive charge of the sphere attracts the negative electrons. Because the outer area is going to become positively charged by induction, then I will have electrons come up from the Earth to neutralize it, so the inside surface will become negatively charged, and the outer surface will be neutral. However, the correct answer is B. Could anyone please offer any insight into why the answer is B? Thanks in advance!