What is an Ohm?
An ohm is a unit used in the international system of measurements to measure resistance. The symbol for an ohm is the Greek letter omega. By definition, an ohm is equal to one volt creating one ampere in a device, abbreviated as V/A. An ampere, or amp, is a measure of current equal to a specific amount of force between a theoretical pair of infinite conductors in a vacuum. Georg Ohm was a German physicist in the early 19th century. Ohm was well-trained in both mathematics and physics and held a number of distinguished teaching positions. In 1827, he published what is viewed by most people as his master work, Die galvanische Kette mathematisch bearbeitet, in which he laid out most of his general theory of electricity. Ohm is looked at by many as one of the great fathers of electricity, as his work heavily influenced all theory of the day. Ironically, it took many years for Ohm to gain recognition in his own life. Though he strove for a professorship at a university, he received little a
The ohm is the standard unit of resistance for direct current, and the standard unit of impedance for alternating current. According to Ohm’s law, one ohm is the resistance between two points that requires one volt of potential difference to produce one ampere of current. In the process, one watt of energy is converted into heat.
