Quality Factor of InductorEvery inductor possesses a small resistance in addition to its inductance. The lower the value of this resistance R, the better the quality of the coil. The quality factor or the Q factor of an inductor at the operating frequency ω is defined as the ratio of reactance of the coil to its resistance.Thus for a inductor, quality factor is expressed as,Where, L is the effective inductance of the coil in Henrys and R is the effective resistance of the coil in Ohms. As the un