Page 320 - Basic Electrical Engineering
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where = impedance of the circuit
Voltage and current wave shapes of this circuit are shown in Fig. 3.24, which
shows that the current in a capacitive circuit leads the voltage by an angle ϕ,
which is called the power factor angle.
Figure 3.23 Phasor diagrams of R–C series circuit
Figure 3.24 Wave forms of voltage and current and their phase relationship in an R–C series circuit
Power and power triangle
The expression for voltage and current is