Abampere

The $\textit{Abampere (aA)}$, also called the $biot$ after Jean-Baptiste Biot, is the basic electromagnetic unit of electric current in the emu-cgs system of units (electromagnetic cgs). One $abampere$ is equal to ten amperes in the SI system of units. An $abampere$ is the constant current that produces, when maintained in two parallel conductors of negligible circular section and of infinite length placed 1 centimetre apart, a force of 2 dynes per centimetre between the two conductors.