LC Circuit - Reactor + Capacitors

When you have a series circuit with a capacitor , inductor and resistance the effect of the capacitor and inductor work in plus and minus 90° to each other at the resonant frequency and the current is determined only by the resitance.

The resonant frequency is 1/((L*C)^.5)*2*pi in Farads and Henries hence a circuit of 1 henry and 1 farad would have a resonant frequency of 0.159 Hz

I suggest u read the Electrical circuits book by charles siskind. LC circuit is explain there...