Question

Resonant frequency of a series LCR circuit is
600 Hz. Quality factor of the circuit is 4. Band
width is
(1) 300 Hz
(2) 150 Hz
(3) 1200 Hz
(4) 450 Hz​

Answer 1

The bandwidth of the circuit is 150 Hz

Explanation:

Given that,

The resonant frequency of the series LCR circuit, f = 600 Hz

Quality factor of the circuit is, Q = 4

The ratio of the frequency and the quality factor is equal to the bandwidth of the LCR series circuit such that,

$B=\dfrac{f}{Q}\\\\B=\dfrac{600\ Hz}{4}\\\\B=150\ Hz$

So, the bandwidth of the circuit is 150 Hz. Hence, this is the required solution.

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LCR circuit

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