# Q7.20 (c)  A series LCR circuit with $L=0.12H$, $C=480nF$, $R=23\Omega$  is connected to a $230V$variable frequency supply. What is the $Q$ factor of the given circuit?

$Q=\frac{w_rL}{R}=\frac{4166.67*0.12}{23}=21.74$