Question

In series $L-C-R$ circuit, the resonating frequency is 600 Hz.The half power points are at 650Hz and 550 Hz.The quality factor is:

• A. 1/6
• B. 1/3
• C. 6
• D. 3

Answer 1

The correct option is C 6

The relationship between bandwidth(B) and quality factor (Q) is given by $B=\frac{{\omega }_0}{Q}$

Here $B=650-550=100Hz$

and ${\omega }_0=600Hz$

so, $Q=\frac{600}{100}=6$