JEE MAIN · PHYSICS · ALTERNATING CURRENT

JEE Main Alternating Current Questions & Solutions

10 solved questions on Alternating Current, ranging from easy to JEE-Advanced-flavour hard. Click any to see the full solution.

9Easy
1Medium
0Hard
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All 10 questions

  1. Easy INTEGER +4 / -1

    A transformer has 100 primary turns and 500 secondary turns. If primary voltage is 220 V, secondary voltage (in V) is:

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  2. Easy MCQ +4 / -1

    In an ideal step-up transformer with $N_s > N_p$:

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  3. Easy MCQ +4 / -1

    The term $\cos\phi$ in AC power is called:

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  4. Easy MCQ +4 / -1

    The average power dissipated in a pure capacitor in an AC circuit is:

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  5. Easy TRUE_FALSE +2 / -1

    At resonance in a series LCR circuit, the impedance equals the resistance $R$.

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  6. Easy MCQ +4 / -1

    The resonance frequency of a series LCR circuit is:

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  7. Medium INTEGER +4 / -1

    In an LCR circuit with $R=3\,\Omega$, $X_L=6\,\Omega$, $X_C=2\,\Omega$, the impedance (in Ω) is:

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  8. Easy MCQ +4 / -1

    The impedance of a series LCR circuit is:

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  9. Easy MCQ +4 / -1

    In a pure inductor, the current:

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  10. Easy MCQ +4 / -1

    The RMS value of an AC voltage with peak value $V_0$ is:

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