( Electrical engineering : Circuits , Electrical power )
On an AC power system, there are two kinds of power - real power that actually does
work, and reactive power that enables transformers to transform, generators to generate, and motors to rotate.
Capacitors can be used to intercept the reactive power from inductive motors, and return it to the source on the next cycle.
Reactive power is the part of complex power that corresponds to storage and retrieval of energy
rather than consumption.
Collins English Dictionary. Copyright © HarperCollins Publishers