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NEET
Exam
NEET
Subject
Physics
Chapter
Alternating Current

NEET · Physics · Alternating Current

Total impedance of a series L-C-R circuit varies with angular...

Total impedance of a series L−C−RL-C-R circuit varies with angular frequency of the AC\mathrm{AC} source connected to it as shown in the graph. The quality factor QQ of the series L−C−RL-C-R circuit is Total impedance of a series L-C-R circuit varies with angular frequency of the AC source connected to it as shown in

Options

  1. A0.40.4
  2. B2.52.5
  3. C55
  4. D11

Correct answer

B. 2.52.5

Step-by-step solution

According to given diagram, ω1=400rad/s;ωr=500rad/sω2=600rad/s\begin{aligned} & \omega_1=400 \mathrm{rad} / \mathrm{s} ; \omega_r=500 \mathrm{rad} / \mathrm{s} \\ & \omega_2=600 \mathrm{rad} / \mathrm{s}\end{aligned} Total impedance of a series L-C-R circuit varies with angular frequency of the AC source connected to it as shown in
Quality factor, Q=ωrω2−ω1=500600−400=500200=2.5\begin{aligned} Q & =\frac{\omega_r}{\omega_2-\omega_1} \\ & =\frac{500}{600-400}=\frac{500}{200}=2.5\end{aligned}
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