Question

The expression of ωr in a parallel resonant circuit is?

(a) 1/(2√LC)

(b) 1/√LC

(c) 1/(π√LC)

(d) 1/(2π√LC)

The question was posed to me in an interview for job.

I need to ask this question from Resonant Frequency for a Tank Circuit in chapter Resonance & Magnetically Coupled Circuit of Network Theory

Answer 1

The correct answer is (b) 1/√LC

Easy explanation: The stored energy is transferred back and forth between the capacitor and coil and vice-versa. The expression of ωr in parallel resonant circuit is ωr = 1/√LC.