Yahoo Answers: Answers and Comments for Which one of these formulas is the correct one for finding power factor (pf)? [Engineering]
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From Anonymous
enUS
Sat, 16 Feb 2013 15:08:03 +0000
3
Yahoo Answers: Answers and Comments for Which one of these formulas is the correct one for finding power factor (pf)? [Engineering]
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From Roger: Equation 2, pf = E•I/(EI) where E and ...
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Sat, 16 Feb 2013 23:55:47 +0000
Equation 2, pf = E•I/(EI) where E and I are not bold (i.e. vectors) . but amplitude

From Rick: pf=cos(theta) where theta is the phase angle b...
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Sat, 16 Feb 2013 23:44:05 +0000
pf=cos(theta) where theta is the phase angle between the voltage and current. There is no reason to use the dot product or cross product.