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For the circuit shown below, determine its resonant frequency.

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in Network Theory by (157k points)
For the circuit shown below, determine its resonant frequency.

(a) 6.12

(b) 7.12

(c) 8.12

(d) 9.12

I had been asked this question in quiz.

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

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Correct answer is (b) 7.12

Easy explanation: The resonant frequency of the circuit is fr = 1/(2π√LC). Given L = 5H and C = 100uf. On substituting the given values in the equation we get resonant frequency = 1/(2π√(5×100×10^-6)) = 7.12 Hz.

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