Physics

Problem

In a series LCR circuit the current amplitude attains a maximum of 1.2 A at an angular frequency of

2.0\times10^{3}\,\text{rad}\,\text{s}^{-1}

. At

1.8\times10^{3}\,\text{rad}\,\text{s}^{-1}

and

2.2\times10^{3}\,\text{rad}\,\text{s}^{-1}

the current amplitude is

0.85\,\text{A}

. Calculate the quality factor of the circuit.