# power factor

## Definitions

### Construction

- A calculation, expressed as a percentage, that relates the volt amperes of an AC circuit, or the apparent power, to the wattage, or the true power. In essence, it provides a measurement of how effectively electrical power is being used. A higher power factor means a more effective use of electrical power.

### Electronics

- In an
__AC circuit__, the __ratio__ of the true power to the apparent power. If both the __voltage__ and the current are __sinusoidal__, the power factor is equal to the __cosine__ of the phase angle between them. If both the voltage and the current are in __phase__, then the power factor is __I__. Its abbreviation is PF. - acronymPF

- abbreviation in
__Internet__ addresses, the top-__level__ domain for French Polynesia

http://www.dictionarycentral.com/definition/power-factor.html