1. The problem statement, all variables and given/known data Suppose you have a capacitor with capacitance C charged to voltage V and a second capacitor with capacitance C charged to voltage 2V. The two capacitors are connected in parallel. What will be the voltage across the two capacitors after being connected in parallel? 2. Relevant equations Q = CV 3. The attempt at a solution These kinds of questions confuse the hell out of me. What does it have to do with a parallel connection? What's the difference if it was in series? I know that for a parallel connection, the charge is constant throughout, and for a series connection the voltage is constant throughout....but what does that really mean? How do you apply it? I really see no possible way to solve this, but at the same time I feel like it's simple. What are you supposed to do here??