Alternating Current Circuits

Alternating Current (6:48)

Concept of alternating current and EMF, with demonstration

Power in AC Circuits (9:15)

Determining the power dissipated by resistors in an AC circuit

Transformers (22:43)

Discussion of how a transformer works with AC circuits to step up or down the voltage, including a demonstration

Capacitors in AC Circuits (19:23)

Describing the charging and discharging of a capacitor when connected to an AC source, and the consequences for the current in the circuit.

Inductance (3:15)

Self inductance as the induced EMF in a coil from changing the current in the same coil. Also the phenomenon of back EMF and how to calculate the self inductance from the magnetic flux passing through the coil.