Alternating CurrentHard
Question
A series LCR circuit is operated at resonance. Then
Options
A.Voltage across R is minimum
B.Impedance is minimum
C.Power transferred is maximum
D.Current amplitude is minimum
Solution
z = 
at resonance = XC, so Z = Zmin = R
& ∵ tanφ =
. So power factor, cos θ = 1 = maximum.
at resonance = XC, so Z = Zmin = R
& ∵ tanφ =
. So power factor, cos θ = 1 = maximum.Create a free account to view solution
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