si unit of resistance

The SI unit of resistance is the ohm, symbolized as Ω. One ohm is defined as the resistance of a conductor in which a current of 1 ampere flows when a potential difference of 1 volt is applied across it. Mathematically, it can be expressed as: 1 Ω=1 volt1 ampere1,\Omega =\frac{1,\text{volt}}{1,\text{ampere}}1Ω=1ampere1volt​ The unit is named after the German physicist Georg Ohm. The resistance RRR is given by the ratio of voltage VVV to current III, according to Ohm's law: R=VIR=\frac{V}{I}R=IV​ Thus, the ohm is a derived unit in the International System of Units (SI) related to volts and amperes.