1. The problem statement, all variables and given/known data My question is a series circuit is connected to a power supply set to 300Hz. At this frequency R=30 ohms, Xc=20 ohms, XL=40 ohms. I've then to work out values of R,Xc, XL at a range of frequencys from 100-600Hz. 2. Relevant equations Xc=2x3.14xFxC, XL=2 x 3.14 x F x L 3. The attempt at a solution I have worked out the values of XL, Xc which I'm fairly sure are correct, just wondering does R stay at the same value despite the change in frequency ? Any help greatly appreciated !