1) An inductor resists changes in current and has an impedance of iωL. 2) In an RLC circuit, the behavior is determined by the time constant L/R. If L/R is small, the circuit is overdamped; if L/R is large, it is underdamped and will ring. 3) An RLC circuit can act as a bandpass filter, with peak gain occurring at the resonant frequency of 1/√LC. The quality factor Q relates to the bandwidth around the peak gain.