Which of the following statements is incorrect about quality factor (Q) of a circuit (L-C-R in series)?

It is a dimensionless term

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Ratio of inductive reactance to resistance at resonance frequency

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Large R indicates high quality factor

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It is directly proportional to band width

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Solution

The correct option is C Large R indicates high quality factor
$Q = \frac{ω_{0} L}{R}$
So, large $R$ means low $Q .$

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