Ochm

Ochm is a term that appears to be a misspelling or a less common variation of "ohm". The ohm (symbol: Ω) is the SI derived unit of electrical resistance and conductance. It is named after the German physicist Georg Simon Ohm. The ohm is defined as the electrical resistance between two points of a conductor, when a constant potential difference of one volt, applied between these points, produces in this conductor a current of one ampere. In other words, 1 Ω = 1 V/A.

Electrical resistance is a measure of how difficult it is for an electric current to pass through a substance. Materials with high resistance are called insulators, while materials with low resistance are called conductors. The ohm is a fundamental unit in the study of electricity and is used in various electrical calculations, including Ohm's Law, which states that the voltage across a resistor is directly proportional to the current flowing through it and the resistance of the resistor. The unit is also used to measure impedance, which is the total opposition to alternating current flow.