(iii) The LCR series circuit: phasor diagram, expression for V or I; phase lag/lead; impedance of a series LCR circuit (arrived at by phasor diagram); Special cases for RL and RC circuits.
5. Alternating Current Circuits

(iii) The LCR series circuit: phasor diagram, expression for V or I; phase lag/lead; impedance of a series LCR circuit (arrived at by phasor diagram); Special cases for RL and RC circuits.

# Chapter : 5. Alternating Current Circuits

Remaining lessons :

 (i) Change of voltage and current with time, phase; peak and rms values of voltage and current; their relation in sinusoidal case. peak and rms values of voltage and current; their relation in sinusoidal case. (ii) Variation of voltage and current in a.c. circuits consisting of only a resistor, only an inductor and only a capacitor (phasor representation), phase lag and phase lead. (iii) The LCR series circuit: phasor diagram, expression for V or I; phase lag/lead; impedance of a series LCR circuit (arrived at by phasor diagram); Special cases for RL and RC circuits. (iv) Power P associated with LCR circuit = ½VoIo cosf =VrmsIrms cosf = Irms2R; power absorbed and power dissipated; choke coil (choke and starter); electrical resonance; bandwidth of signals and Q factor; oscillations in an LC circuit (? = 1/vLC). (iv) Power P associated with LCR circuit = ½VoIo cosf =VrmsIrms cosf = Irms2R; power absorbed and power dissipated; choke coil (choke and starter); electrical resonance; bandwidth of signals and Q factor; oscillations in an LC circuit (? = 1/vLC). (iv) Power P associated with LCR circuit = ½VoIo cosf =VrmsIrms cosf = Irms2R; power absorbed and power dissipated; choke coil (choke and starter); electrical resonance; bandwidth of signals and Q factor; oscillations in an LC circuit (? = 1/vLC). (iv) Power P associated with LCR circuit = ½VoIo cosf =VrmsIrms cosf = Irms2R; power absorbed and power dissipated; choke coil (choke and starter); electrical resonance; bandwidth of signals and Q factor; oscillations in an LC circuit (? = 1/vLC). (iv) Power P associated with LCR circuit = ½VoIo cosf =VrmsIrms cosf = Irms2R; power absorbed and power dissipated; choke coil (choke and starter); electrical resonance; bandwidth of signals and Q factor; oscillations in an LC circuit (? = 1/vLC). (iv) Power P associated with LCR circuit = ½VoIo cosf =VrmsIrms cosf = Irms2R; power absorbed and power dissipated; choke coil (choke and starter); electrical resonance; bandwidth of signals and Q factor; oscillations in an LC circuit (? = 1/vLC). (iv) Power P associated with LCR circuit = ½VoIo cosf =VrmsIrms cosf = Irms2R; power absorbed and power dissipated; choke coil (choke and starter); electrical resonance; bandwidth of signals and Q factor; oscillations in an LC circuit (? = 1/vLC).