Hello I'm trying to get my head around ohms law, and have a question. If I have a motor that draws 12volt 100amp, and I would like to drop the amps down to 30, would I put a 360ohm resister in line. 12 * 30 = 360 V * I = R Side note can you get a resister that is 480 watt? Thank you P.S I've got some nicchrome wire that I could cut to that ohm, but it would glow red hot. Would that happen to all types of reisiters that could do these.