Ampere turn

Physical unit
Unit name	Ampere turn
Unit symbol	${\displaystyle \mathrm {Aw,\,AW} }$
Physical quantity (s)	magnetic flow , current intensity
Formula symbol	${\displaystyle \Theta }$
dimension	${\displaystyle {\mathsf {I}}}$
In SI units	${\displaystyle \mathrm {1\,Aw=1\;A} }$
Derived from	Amps , full angle

The ampere turn (unit symbol: Aw, AW ) is a clear but outdated unit of measurement for the magnetic flow in the area of electromagnetism . An electrical current of 1 A causes a current of  1 Aw in a single conductor loop.

The name came about because the magnetic voltage of coils or windings in electrical machines is obtained by multiplying the current strength by the number of turns. Since the number of turns is a quantity in the dimension number , the corresponding SI unit is the ampere.

Expressed with the SI units Joule (J) and Weber (Wb), the following applies: ${\displaystyle \mathrm {1\,Aw=1\,{\frac {J}{Wb}}} }$