Question

A circuit excited by voltage V has a resistance R which is in series with an inductor and capacitor, which are connected in parallel. The voltage across the resistor at the resonant frequency is ___________ (a) 0 (b) \(\frac{V}{2}\) (c) \(\frac{V}{3}\) (d) V This question was posed to me in unit test. I need to ask this question from Problems of Parallel Resonance Involving Quality Factor in portion Resonance & Magnetically Coupled Circuit of Network Theory Select the correct answer from above options network theory questions and answers, network theory questions pdf, network theory question bank, network theory gate questions and answers pdf, mcq on network theory pdf, gate network theory questions and solutions, network theory mcq Test , ies network theory questions, Network theory Questions for GATE EC Exam, Network Theory MCQ (Multiple Choice Questions)

Answer 1

The correct answer is (a) 0 The explanation: Dynamic resistance of the tank circuit, ZDY = L/(RLC) But given that RL = 0 So, ZDY = L/(0XC) = ∞ Therefore current through circuit, I = \(\frac{V}{∞}\) = 0 ∴ VD = 0.