How do you know whether it is leading or lagging in Power Factor? I was told by my lecturer that if the sin θ is positive then it is lagging And if it is sin θ is negative then it is leading However, in this case, the answers that I got is all positive but it has a variation of leading and lagging. I am confused. Does he means that if the θ is positive then is is lagging and if it is negative then it is leading ? I try to google up on this and this is what I get ... But I practically do not understand a thing from the Mnemonics From the Mnemonics "ELI the ICE man" or "ELI on ICE" the voltage E leads the current I in an inductor L, the current leads the voltage in a capacitor C. CIVIL in a Capacitor the I (current) leads Voltage, Voltage leads I (current) in an inductor L. P/s: I have also upload the solution if you need more detail on the solutions.