What happens when you connect a charged capacitor to an inductor? You get an oscillating circuit. Here's how it all works.

For a pure capacitor or inductor, the real part is zero. Real circuits will have combinations and thus will have a combination of real and imaginary parts.

Capacitors connected from line to neutral provide reactive power to an AC circuit, which is measured in volt-amperes reactive (VARs). For a given value of capacitance, more VARs are supplied as the ...