Ampere to Abampere Converter

An ampere (A) is the SI base unit of electric current, defined as the flow of one coulomb of electric charge per second. It represents the fundamental measure of electrical current flow in a conductor.

The ampere was named after French physicist André-Marie Ampère in 1881. Originally defined in terms of the force between current-carrying conductors, it was redefined in 2019 based on the elementary charge, providing a more fundamental and precise definition tied to quantum mechanics.

Amperes are universally used for measuring electrical current in all applications, from household electronics to industrial systems. They're essential for electrical safety, circuit design, power calculations, and are found on every electrical device rating, fuse, and circuit breaker.

An abampere (abA), also called a biot, is a unit of electric current in the electromagnetic CGS system, equal to 10 amperes in SI units. It was defined based on the magnetic force between current-carrying conductors.

The abampere was developed as part of the electromagnetic CGS unit system in the late 19th century by physicists working on electromagnetic theory. It was designed to make electromagnetic equations simpler by eliminating certain constants, though it resulted in unfamiliar unit sizes.

Abamperes are rarely used in modern applications, appearing mainly in historical scientific literature and some specialized electromagnetic theory contexts. They've been largely replaced by SI units (amperes) in all practical applications and modern scientific work.