In a series LCR circuit, L and C are kept fixed while R is decreased. Which statements are correct?
Select all that apply

Question

In a series LCR circuit, L and C are kept fixed while R is decreased. Which statements are correct?

G1 Physics · Accepted Answer

The ideal resonant frequency is f₀ = 1/[2π√(LC)], independent of R. Since Q = ω₀L/R, Q increases when R decreases. Bandwidth Δω = R/L therefore decreases. Resonant current V/R increases, so the last statement is false.