Page 388 - Basic Electrical Engineering

when f = f 0

or,

We had earlier calculated f as
0

Thus,

Figure 3.68 (a) Resonance curves for two values of resistance; (b) bandwidth of a resonant circuit

In terms of X C

Higher the ratio of reactive power to active power or higher the ratio of
voltage across L and C to the supply voltage, the higher is the value of
quality factor. Higher quality factor means sharper is the resonant factor