I'll freely admit, I'm a 3rd year student and I'm just starting to understand all of this theory. I know that there is inductive and capacitive reactance in a circuit that is shown by power factors. I have also never seen any of these differential equations or the AC equations shown by Steve. My question is this: Do the DC equations still correctly show the basic relationship between Power, Voltage, Current and Resistance, or does AC change all of this as Steve seems to be suggesting? If I'm missing something big, I would welcome someone pointing me in the right direction.
