AC Circuits and Phasors
How voltage and current behave in circuits with resistors, capacitors and inductors under AC.
Alternating Current
Unlike DC, an alternating current periodically reverses direction, typically varying sinusoidally with time.
Behaviour of Components
| Component | Effect on AC |
|---|---|
| Resistor | Voltage and current stay in phase |
| Inductor | Current lags behind voltage |
| Capacitor | Current leads voltage |
Lesson 15 of 32