1. Please see the attached problem, essentially a metal ball with charge Q1 is surrounded by a grounded shell q which in turn is surrounded by a further shell with charge Q2 Q1. The first question is what is the charge induced on q by Q1 and Q2 Q2. The second question is how is the charge distributed between the inner and outer surfaces of q [/b] 2. None 3. My problem is I am not sure what the effect of grounding is. From the information given I have assumed the following: qinner = Q2-Q1 qouter = Q1-Q2 qnet = qinner+qouter=Q2-Q1+Q1-Q2=0 This I believe would apply to an ungrounded shell so what is the effect of grounding if the net effect = 0?