Question

Define the quality factor in an a.c. circuit. Why should the quality factor have high value in receiving circuits? Name the factors on which it depends.

Answer 1

The ratio`(omega_0L)/R`is called the quality factor or Q-factor.

`Q = (omega_0L)/R`

The quality factor has high value in receiving circuits in order to get a sharp gain for the desired channel frequency.

The quality factor depends on the values of the following:

1. Inductance

2. Resistance

3. Capacitance