Physics

Problem

For a certain series LCR circuit, the current amplitude is maximum at

\omega = 4.0\times10^{3}\,\text{rad s}^{-1}

. The amplitude falls to

I_{\max}/\sqrt{2}

\omega = 3.6\times10^{3}\,\text{rad s}^{-1}

and

\omega = 4.4\times10^{3}\,\text{rad s}^{-1}

. The quality factor

Q

of the circuit is a)

10

2.5

5

15.7