ampere
/ˈæmˌpɛər/ · am·père
noun
- The SI base unit of electric current, equal to one coulomb of charge passing a point per second; symbol A, often shortened to amp. The circuit draws a current of three amperes when the switch is closed.
Synonyms
Did you know? The ampere was originally defined in 1881 by the force between two parallel conductors, a definition that remained until a 2019 redefinition based on the elementary charge.