1. The problem statement, all variables and given/known data Find the resistance of resistor R7 when the switch is turned on so that the power of that resistor is maximum in the circuit. The voltage of the capacitor before the switch is turned on is Vc=200V. 2. Relevant equations Thevenin's theorem 3. The attempt at a solution I believe I should be using Thevenin's theorem but I have no idea how to put it. Help would be appreciated.