Electrical Engineering ⇒ Topic : Power in AC Circuit
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| Sonali
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Power in AC Circuit The instantaneous power varies continuously as the current and voltage go through a cycle.The instantaneous power p = vi, where p, v, and i are the instantaneous values of power, voltage, and current respectively The product of Vrms and Irms is called the apparent power. When apparent power is multiplied by the power factor cos Φ of the load, it is called true power. It is not possible to measure ac power by using ammeter and voltmeter due to the involvement of power factor. Wattmeter is generally used to measure power in ac circuits | |
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