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CBSE Class 12-science Answered

The power factor varies between………………
Asked by rajneetverma11 | 16 Feb, 2020, 04:42: PM
Expert Answer
The power factor varies between 0 and 1.
Power factor (PF) = cos Θ
Where,Θ is phase angle between voltage  ad current 
For purely resistive circuits, phase angle between voltage and current is zero thus, power factor is 1 and for purely reactive circuits, phase angle between voltage and current is 90 degree thus, power factor is 0
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