Impedance in AC Circuits

Learning objectives

  • Describe a phasor diagram
  • Demonstrate the use of Ohm’s law to calculate for unknowns in an AC circuit
  • Define impedance
  • Identify the steps to find impedance in a resistive-inductive series AC circuit
  • Identify the steps to find impedance in a resistive-capacitive series AC circuit
  • Identify the different steps needed to find impedance in a parallel AC circuit of resistance and reactance

Course overview

When working with AC circuits, using the correct values for calculations is necessary to get the correct answer. AC circuits react differently with inductance and capacitance than DC circuits. Basic Ohm's Law can't be used in AC circuits without understanding how to determine impedance. This understanding is important in installing, troubleshooting, or repairing AC circuits.

The Impendence in AC Circuits training course shows how to determine the total impedance of an AC circuit and apply Ohm's Law to find other unknown values. This online course focuses on:

  • Phasor diagrams
  • Ohm's Law and alternating current
  • AC circuits with inductive reactance and resistance in series
  • AC circuits with capacitive reactance and resistance in series
  • AC circuits with reactance and resistance in parallel

Impedance in AC Circuits is part of the Alternating Current (AC) training series.

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