Active, Reactive, Apparent Power Calculator

Apparent power in an AC circuit is the resultant of the active and reactive powers. In complex number, S = P + j Q. Where the S is the apparent power, P is active power and the Q is reactive power.

Active Power or True power, S  = V x I CosΦ W,  Current and Voltage in phase.

Reactive Power, Q = V x I SinΦ var, Current and Voltage 90° out of phase.

Apparent Power, P  = V x I VA 

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