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Ohm and the Electrical Resistance

Live of the G .S. Ohm grate electric pioneer. Grate moments in science and technology, Georg Simon Ohm (16 March 1789 – 6 July 1854) was a German physicist and mathematician. As a school teacher, Ohm began his research with the new electrochemical cell, invented by Italian scientist Alessandro Volta. Using equipment of his own creation, Ohm found that there is a direct proportionality between the potential difference (voltage) applied across a conductor and the resultant electric current. This relationship is known as Ohm's law. Electrical resistance is the repulsion of a current within a circuit. It explains the relationship between voltage (amount of electrical pressure) and the current (flow of electricity). Resistance, discovered by Georg Simon Ohm in 1827, is the ratio between voltage and current. Ohm's law said that the voltage between any two points in a conductor changes directly as the current between the two points, given the temperature remains the same. He described it with the equation: R = V/I which models the ratio, where: R is the resistance of the object, measured in ohms (Ω) V is the voltage across the object, measured in volts (V) I is the current going through the object, measured in amperes (A)