Different Curves at Parallel Resonance:
Figure illustrates admittance (Y), impedance (Z) and power factor angle (θ) curves, which illustrates the variation of Y, Z and (θ) with frequency.
(a) (b) (c)
BC = ωC and BL =1/ωL are the capacitive and inductive susceptance.
Net susceptance B = BC - BL
= ωC - 1/ωL
at resonance B = 0.