Magnitude, Direction, and Time – 10 minutes
Describes how a basic AC generator works to produce voltage and current. Shows how the magnitude and direction of AC voltage and (in-phase) current can be plotted against time using sine waves, and how current can be shown for a given point in time.
Inductance – 6 minutes
Defines inductance and inductive reactance. Describes how an inductor works to oppose changes in AC current. Uses sine waves and phasors to explains the effects of inductance and capacitance on AC voltage and current.
Capacitance – 6 minutes
Defines capacitance and capacitive reactance. Explains how a capacitor works to oppose changes in AC voltage. Shows the effects of capacitance on AC voltage and current using sine waves and phasors.
AC Power – 10 minutes
Differentiates between active power, reactive power, and apparent power. Explains how power factor is used in calculating active power in AC circuits.