E xplain how frequency affects the reactance of an inductor. D escribe the basic properties of series RL circuits. E xplain the meaning of the Q , or merit , of an inductor. C alculate the Q of an inductor.
D escribe how the Q of an inductor changes with the operating frequency.
The Q of an inductor is the measure of its quality . The more 'perfect' the inductor, the higher its Q value. The Q of a coil is also known as the merit of a coil. A 'perfect' inductor would have a Q of infinity. Although it is possible to achieve Qs on the order of 2000 or so, most inductors have Q values that are less than 100 when used in their intended frequency ranges.