I'm currently writing up a physics practical which looked at the resonance of the impedance of an LCR network. I'm trying to look for theoretical information on the internet, but am struggling to find relevant information. The LCR circuit I used had the inductor and resistor in series, then connected in parallel to the capacitor. The only information I can find is for all three components connected in series. I'd really appreciate it if anyone could suggest websites that might be useful. Thanks.