What is AT and AF in electrical term?

In electrical terms, AT (Ampere-Turn) is a unit that measures the magnetomotive force (MMF) in a magnetic circuit, indicating the strength of the magnetic field produced by an electric current flowing through a coil. Meanwhile, AF (Ampere-Foot) is a unit used to express the current-carrying capacity of a conductor over a given length, typically in relation to the resistance or inductance of the conductor. Both terms are important in designing and analyzing electromagnetic systems.