At resonance
1
power factor is better in R-L-C series circuit than R-L-C parallel circuit
2
power factor is leading in R-L-C series circuit and lagging in R-L-C parallel circuit
3
power factor is leading in R-L-C parallel circuit and lagging in R-L-C series circuit
4
power factor is unity in R-L-C series as well as R-L-C parallel circuits