# RC Series Circuit A circuit that contains pure resistance R ohms connected in series with a pure capacitor of capacitance C farads is known as RC Series Circuit.

Let ,

V=rms value of applied voltage

I=rms value of the circuit current

Voltage across R ,VR=IR    where VR is in phase with I.

voltage across C,Vc=IXc     where Vc lags I by 90°.  Taking current as references phasor .

The voltage drop VR=IR is in phase with current and is represented in magnitude and direction by the phasor OA.The voltage drop Vc=IXc lags behind the current by 90° and is represented in magnitude and direction by the phasor AB.

The applied voltage V is the phasor sum of these two drops   ## I. Phase angle Current I leads the applied voltage V by Φ°. since current is taken as reference phasor, negative phase angle implies that voltage lags behind the current. This is the same thing as current leads the voltage. ## II. Power  ## Related terms:

RL series circuit

Magnetic circuits

Inductors in series and parallel

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