Alternating CurrentMedium
Question
The value of power factor cosf in series LCR circuit at resonance is :
Options
A.Zero
B.1
C.1/2
D.1/2 ohm
Solution
At resonance xL = xC
So, z = R, ⇒ cos φ = 1
So, z = R, ⇒ cos φ = 1
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