Discussion in 'Homework Help' started by Joess7, May 16, 2009.
what is the formula to find power factor in an AC circuitry? thanks for the help
Here is a link to the section on power factor located in the AAC ebook. You will find the equation there.
power factor=(real power)/(apparent power)
Instantaneous or Average Power Factor? Instantaneous = W (E*I)*(COS of Phase Angle Difference between the Voltage and Amperage) / VA....or Average over time: kWh / kVAh. If kVAh are not available; √ kWh2 + kVARh2 .
My mistake! The previous equation will give you kVAh, then use kVAh/kWh for average PF. Sorry!