To have large selectivity in a series LCR circuit

Question

To have large selectivity in a series LCR circuit (A) L should be large, R should be small (B) Both L and R should be large (C) L should be small, R should be large (D) Both L and R must be small

Tardigrade Admin · Accepted Answer

Quality factor of LCR circuit is Q = (ωo L/R) If Q is large for LCR circuit i.e. R is low and L is large then the circuit is more selective.

Q. To have large selectivity in a series LCR circuit

L should be large, R should be small

Both L and R should be large

L should be small, R should be large

Both L and R must be small

Quality factor of $L CR$ circuit is
$Q = \frac{ω _{o} L}{R}$
If $Q$ is large for $L CR$ circuit i.e. $R$ is low and $L$ is large then the circuit is more selective.

Q. To have large selectivity in a series LCR circuit

L should be large, R should be small

Both L and R should be large

L should be small, R should be large

Both L and R must be small

Quality factor of LCR circuit is Q=Rωo​L​ If Q is large for LCR circuit i.e. R is low and L is large then the circuit is more selective.

Quality factor of $L CR$ circuit is
$Q = \frac{ω _{o} L}{R}$
If $Q$ is large for $L CR$ circuit i.e. $R$ is low and $L$ is large then the circuit is more selective.