# Definition Transfer of electrons through a conductor - Denoted as $I$ - Units of *amperes* ($A$) - A current of $1\text{ A}$ maintained in two parallel, infinitely long conductors with negligible cross-section will produce a force of $2\times10^{-7}\text{ N/m}$ - $1\text{ C} = 1\text{ A}\cdot\text{s}$