power factor



  • 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.


  • 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

Information & Library Science

  • abbreviation in Internet addresses, the top-level domain for French Polynesia