Ohm's law

[Georg Simon Ohm, German physicist, 1787—1854.] In an electric current pa ing through a wire the intensity of the current, in amperes, equals the electromotive force, in volts, divided by the resistance, in ohms. Let C = current in amperes, electromotive force in volts, and resistance in ohms: then C'=— E = CXR; R=^.