Question

For L-C-R, A.C circuit resonance frequency is $600Hz$ and frequencies at half power points are $550Hz$ and $650Hz$. What will be the Q-factor?

• A. $\frac{1}{6}$
• B. $6$
• C. $\frac{1}{3}$
• D. $3$

Answer 1

Answer: (B)

$6$

$Q=\frac{{\omega }_o}{{\omega }_2-{\omega }_1}$

where, ${\omega }_o=$resonance frequency$=600Hz$

${\omega }_1=550Hz$

${\omega }_1=650Hz$

$\therefore Q=\frac{600}{650-550}=\frac{600}{100}=6$