The practical unit of electromotive force, which will cause a current of one ampere to flow through a conductor against a resistance of one ohm.

伏特(电压单位)。电位、电位差（俗称电压）单位。一伏特，为一安培电流通过某导线所消耗之功率为一瓦特时，该导线两端间之电位差。