The question goes as follows: The correct answers are: (a) +1.5q (b) +4q (c) +4q Although, my logic doesn't seem to give me these answers, I was wondering if anyone can explain why and how to approach this problem. My logic goes as follows: Sphere A = +5q Sphere B = -q Sphere C = 0 "Spheres A and B are touched together and then seperated. " Resulting in Sphere A = +4q, Sphere B = 0, Sphere C = 0 "Sphere C is then touched to sphere A and seperated from it." Resulting in Sphere A = 0, Sphere B = 0, Sphere C = +4q "Lastly, sphere C is touched to sphere B and seperated from it." Resulting in Sphere A = 0, Sphere B = +4q, Sphere C = 0 Anyway, we just began this chapter and my understanding of it is extremely minimal so thats why i'm probablly going about it extremely wrong. Just wondering if anyone could help me out and explain how it works?