Ampere, often abbreviated as "A," is the unit of electric current in the International System of Units (SI). It is one of the seven base units in the SI system and is defined as the amount of electric charge that flows through a conductor in one second when a constant current flows. To be more precise, one ampere is defined as the flow of one coulomb of charge per second.
Articles by others on the same topic
The ampere is the SI unit of electric current. Since 20 May 2019 its definition fixes the elementary charge exactly at , with . This gives electrical measurements a reference based on a fixed elementary charge. [ref]
https://www.nist.gov/si-redefinition/ampere-introduction. NIST, Ampere: introduction to the 2019 definition
; [ref].
Unit of electric current.
Affected by the ampere in the 2019 redefinition of the SI base units.