• The SI unit for reactive power, which is the power in an AC circuit that cannot perform work. It is calculated by the following formula: P = I·V·sinθ, where P is the reactive power in watts, I is the current in amperes, V is the voltage in volts, and sinθ is the sine of the angular phase difference between the current and the voltage. It is an acronym for volt-amperes reactive.
  • acronym for volt-amperes reactive
    (written as VAR)

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