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Impedance & phase angle of series L.C.R circuit

This interactive article will guide you in solving a series LCR circuit - deriving the expression for impedance and phase angle - using phasor diagrams.

Expression for current in series L.C.R circuit.

Khan Academy video wrapper
LCR series circuit - impedance & phase angle (part1)See video transcript
Voltage across inductor
Which of the following vectors correctly represents the direction and the magnitude of the phasor, VL, voltage across the inductor?
Note: Phasors spin in an anticlockwise direction.
  • Choose 1 answer:

Voltage across capacitor
Which of the following vectors correctly represents the direction and the magnitude of VC, the voltage across the capacitor?
Note: Phasors spin in an anticlockwise direction.
  • Choose 1 answer:

Khan Academy video wrapper
LCR series circuit - impedance & phase angle (part2) See video transcript
Magnitude of current
What is the expression for i0, the magnitude of current in the LCR series circuit?
Choose 1 answer:

Khan Academy video wrapper
LCR series circuit - impedance & phase angle (part3)See video transcript
Finding phase angle
What is the phase angle, ϕ, between the current and the supply voltage?
  • Choose 1 answer:

Khan Academy video wrapper
LCR series circuit - impedance & phase angle (part4)See video transcript

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