9ohm

George Ohm was a German physicist who in 1827 established a mathematical relationship between the electric current in a circuit and the potential difference (voltage) applied across it. This relationship, known as Ohm's law, states that the current through a conductor between two points is directly proportional to the voltage across the two points. The mathematical equation for Ohm's law is: V = I x R, where V is the voltage, I is the current, and R is the resistance.