Rc Series Circuit Phasor Diagram. Voltage drop v r is in phase with current vector whereas the voltage drop in capacitive reactance v c lags behind the current vector by 90 o since current leads the voltage by 90 o in the pure capacitive circuit. From the phasor diagram shown above it is clear that the current in the circuit leads the applied voltage by an angle ϕ and this angle is called the phase angle.
Therefore when resistance and capacitance are combined the overall difference in angle between circuit voltage and current is an angular difference between 0 and 90 degrees. Voltage drop v r is in phase with current vector whereas the voltage drop in capacitive reactance v c lags behind the current vector by 90 o since current leads the voltage by 90 o in the pure capacitive circuit. This relationship is shown on the phasor diagram figure 11 1b.
Then therefore the instantaneous power is given by p vi.
Recall that current and voltage are in phase for purely resistive ac circuits while current leads voltage by 90 degrees in purely capacitive circuits. Figure 1 parallel rc circuit. In this video phasor diagram representation of voltage and current for series rc rl and rlc circuit has been explained and the examples based on this phaso. This guide covers series rc circuit analysis its phasor diagram power impedance triangle and several solved examples.
