Electrical Engineering ⇒ Topic : Series R-L-C Circuit

R-L-C Series A.C. Circuit

Fig. (a) shows R-L-C series circuit and its phasor diagram. Since the circuit current is taken as the reference phasor (i.e. along OX-axis), we have,

                                               I = I +J 0

                                                                             figure (a)

Note that the phase angle of current is the conjugate of its impedance angle point to keep in mind