${\displaystyle L=\frac{{\Psi }_{\text{AB}}}{i}}$

where the sign of the total flux is determined by taking the voltage, in the time integral defining it, as the difference of the electric potentials at terminals at A and B, and where the current is taken as positive if its direction is from A to B and negative if its direction is from B to A

Note 1 to entry: An inductance cannot be negative.

Note 2 to entry: In French, the term "inductance" is also a short term for "bobine d’inductance", in English "inductor" (IEV 151-13-25).

Note 3 to entry: The coherent SI unit of inductance is henry, H = m² s⁻² kg A⁻².