Alternating Current Ques 2
2. An inductance $L$ having a resistance $R$ is connected to an alternating source of angular frequency $\omega$. The quality factor $\mathrm{Q}$ of the inductance is
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(a) $\frac{R}{\omega L}$
(b) $\left(\frac{\omega L}{R}\right)^2$
(c) $\left(\frac{R}{\omega L}\right)^{1 / 2}$
(d) $\frac{\omega L}{R}$
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Answer:
Correct Answer: 2.(d)
Solution: (d) Quality factor
$ \begin{aligned} & =\frac{\text { Potential drop across capacitor or inductor }}{\text { Potential drop across } \mathrm{R}} \\ & =\frac{I \omega L}{I R}=\frac{\omega L}{R} \end{aligned} $
BETA
