36 Electrical Power Systems Technology
Any inductive circuit exhibits the property of inductance (L), which
is the opposition to a change in current flow in a circuit. This property
is found in coils of wire (which are called inductors) and in rotating ma-
chinery and transformer windings. Inductance is also present in electri-
cal power transmission and distribution lines to some extent. The unit of
Figure 2-12. Resistive-inductive (R-L) circuit: (A) Circuit diagram; (B) Waveforms;
(C) Vector representation