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JEE Main 2022 Physics question

PhysicsAlternating CurrentJEE Main 2022

An inductor of 0.5 mH, a capacitor of 200 and a resistor of 2 are connected in series with a 220 V ac source. If the current is in phase with the emf, the frequency of ac source will be Hz.

Answer: 5

Solution

The current is in phase with the emf at resonance, , so \sqrt{LC}\sqrtExtra open brace or missing close brace{0.5 × 10^{-3}$

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Question ID VK-035195