Question

Name and define the SI unit of resistance.

Answer 1

SI unit of resistance is $\mathrm{ohm}$ : The resistance of a conductor is said to be $1 \mathrm{ohm}$ if a current of 1 ampere flows through it on applying a potential difference, of 1 volt across its ends.

$1 \mathrm{ohm}=\frac{1 \text { volt }}{\text { lampere }}=\text { or } 1 \Omega=\frac{1 \mathrm{~V}}{1 \mathrm{~A}}$