1. The problem statement, all variables and given/known data This is not a true homework problem but rather my interpretation of RC Capacitor theory. What is the action of a capacitor in RC first-order circuits? 2. Relevant equations 3. The attempt at a solution From what i understand, when a capacitor is being charged, charges move from the '-' plate to the '+' plate. Then when discharged, charges move back from the '+' plate back to the '-' plate and thus create current flow in the opposite direction. Thus, current flows in the opposite direction. Why is this appear contradictory to the derivation from my textbook of RC circuit discharge? 1. The current direction does not reverse in the first photo with the circuit diagram. 2. Also, if the current direction is reversed, I find that V/R = C dv/dt, or dv/dt - (1/RC)v = 0 which I know to be wrong. This corresponding KCL equation no longer matches the derivation in the second picture leading to dv/dt + (1/RC)v = 0. I believe the textbook's equation is correct because I've seen it both online and in other textbooks. Is this an issue with passive sign convention that I am not understanding?