Given below are two statements: Statement I: The reactance of an ac… | JEE Main 2022 (24 Jun, Shift 2)

Q75JEE Main 2022 · 24 JUN · SHIFT 2Easy

Resonance, Bandwidth & Q Factor

Given below are two statements:

Statement I: The reactance of an ac circuit is zero. It is possible that the circuit contains a capacitor and an inductor.

Statement II: In ac circuit, the average power delivered by the source never becomes zero. In the light of the above statements, choose the correct answer from the options given below.

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Answer: (c)

Statement I: net reactance $X_L - X_C = 0$ is possible with both $L$ and $C$ present (resonance). True.
Statement II: for a pure $L$ , pure $C$ or pure $LC$ circuit, $\cos\phi = 0$ , so average power is zero. False.
So the answer is (c) Statement I is true but Statement II is false.

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Resonance, Bandwidth & Q Factor question from JEE Main 2022 (24 Jun, Shift 2)

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