1. The problem statement, all variables and given/known data I'm having trouble understanding part C of this question. 2. Relevant equations ΔVo = Vout/2fRC 3. The attempt at a solution So to get ~12V at the output, the turns ratio should be 14 because 120√2/12 = 14.14. Using a turns ratio of 14, the output voltage will be 12.12 V. To find the the value of the resistance, I can use P = V2rms / R, where P = 24 W and Vrms = 12.12/√2. So R = 3 Ω. But then how do I find ΔVo so I can find the capacitance?