A series LCR circuit is operated at either of its half-power frequencies. Which statements are correct?
Select all that apply

Question

A series LCR circuit is operated at either of its half-power frequencies. Which statements are correct?

G1 Physics · Accepted Answer

At half power, I²R = Pₘₐₓ/2, so I = Iₘₐₓ/√2. This requires Z = R√2, which gives |Xʟ − Xᴄ| = R and power factor R/Z = 1/√2.