The ohm (symbol: Ω) is the SI unit of electrical resistance. A conductor has a resistance of one ohm when a potential difference of one volt produces a current of one ampere. Named after Georg Simon Ohm, who formulated Ohm's law.
Microhm
The microhm (symbol: µΩ) is equal to 10⁻⁶ ohms. It is used to measure very low resistances such as contact resistance, cable resistance, and winding resistance in transformers and motors.
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