>>11101742Do you know about Power in circuits? How P = VI?
Now, a motor, for example, has an apparent power, which in mathematics is given by:
S = VI*, I* being the complex conjugate of the phasor I.
Now, S, the apparent power, is:
S = P + iQ
P = True Power(what your motor gives or drains in reality).
Q = Reactive power(not real, it just to account for things like Capacitor and inductor that DOESN'T dissipate power, but still drops voltage and draw current)
Yet, you can use things in real world to calculate the Reactive power and you want it to be low as possible(because if you fix S and you low Q, that means your P, the true power, increase and that is ALWAYS good). Reactive power is an example of what is a complex number that can be calculated in the real world.
Reactive power keeps circulating around your circuit from machine to machine and so on.
