Question

Name and define the SI unit of resistance

Answer 1

Explanation:

1. The SI unit of resistance is ohm (symbol $\Omega$).
2. One ohm is said to be that resistance of a conductor, which is offered when a current of one ampere flows in it while a potential difference of one volt is applied to it.
3. This is measured with direct current.
4. According to ohm's law, the resistance $R$ is the ratio of the voltage $V$ across a conductor and the current $I$ flowing through it.

Mathematically: $R=\frac{V}{I}$

Thus, Ohm is the SI unit of resistance.