# Q factor for a series resonant circuit (RL circuits)

## Description

It is defined as the peak energy stored in the circuit divided by the average energy dissipated in it per cycle at resonance; Q factor is directly proportional to selectivity

Related formulas## Variables

Q | Q factor for a series resonant circuit (dimensionless) |

ω_{0} | Driven resonance frequency (1/sec) |

L | Inductance of the inductor (H) |

R | Resistance of the resistor (ohm) |