Ohm
= Ohm
{title2=$\Omega=\mathrm{V/A}$}
{wiki}
The <ohm> is the <SI> unit of <electrical resistance>, one <volt> per <ampere>. A component of <electrical resistance> $2\,\Omega$ needs an <electric potential difference> of $2\,\mathrm V$ to carry <electric current> $1\,\mathrm A$ under <Ohm's law>. https://openstax.org/books/university-physics-volume-2/pages/9-3-resistivity-and-resistance[Ling, Sanny and Moebs, §9.3: the ohm]{ref}.