If 
and 
are lower and upper half power frequencies of a series LCR circuit, then resonant frequency 
of the circuit is
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
D
Let's recall the relation among the resonant frequency 
, and the half-power (cutoff) frequencies 
and 
:
For a series LCR circuit,
Multiplying:
When R is small (high Q), approximately:
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