Question

The value of ωr in parallel resonant circuit is?

(a) 1/(2√LC)

(b) 1/√LC

(c) 1/(π√LC)

(d) 1/(2π√LC)

This question was addressed to me during an interview for a job.

My question is from Parallel Resonance topic in portion Resonance & Magnetically Coupled Circuit of Network Theory

Answer 1

Right option is (b) 1/√LC

To explain: Basically parallel resonance occurs when XL = XL. The frequency at which the resonance occurs is called the resonant frequency. The value of ωr in parallel resonant circuit is ωr = 1/√LC.