In an ac circuit shown below in figure, the supply voltage has a constant rms value V but…
Physics · JEE Advanced · NTA Exams — Electromagnetic Induction and Alternating Currents
In an ac circuit shown below in figure, the supply voltage has a constant rms value V but variable frequency f. At resonance, the circuit
- has a current I given by : \(I=\frac{V}{R}\)
- has a resonance frequency 500 Hz
- has a voltage across the capacitor which is 180° out of phase with that across the inductor
- has a current given by \[I=\frac{V}{\sqrt{R^{2}+\left(\frac{1}{\pi}+\frac{1}{\pi}\right)^{2}}}\]
Answer
(A) has a current I given by : I= V R
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