It is said that current equals voltage divided by resistance however in what instance is that true? A 9-volt battery gives off 2.7 amps I can make a generator that creates 27 volts but only gives off one amp in what way work? You can't tell me that 26 amps is being burnt off by 180 ft of 28 gauge wire. Especially since it is still in AC form at that point. Also the wall puts out 120 volts but only 15 to 20 amps. Can someone please explain.