NEET Physics Alternating Current MCQs

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    NEET Questions / Physics / Alternating Current

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    Instantaneous, Peak, Rms and Average Value Of A.C
    A.C Across R-L, R-C, L-C And L-C-R Circuit
    Resontant Frequency, L-C Oscillations
    Choke Coil, Transformer
    Power
    1.

    An LC circuit with L=40L = 40 mH and C=10C = 10 ΞΌF is oscillating. At a certain instant, the current is zero and the charge on the capacitor is 2020 ΞΌC. What is the maximum current in the circuit?

    A

    0.5 mA

    B

    1 mA

    C

    2 mA

    D

    4 mA

    Question Tags

    πŸ“š Subject:Physics
    πŸ“‘ Chapter:Alternating Current
    🎯Topic:Resontant Frequency, L-C Oscillations
    πŸŽ“ Ncert Level:Application
    🎯Difficulty :Hard
    ⚑ Time Required :3 mins
    πŸ”„Ncert Concepts :L-C Oscillations, Energy Conservation
    2.

    In an undamped LC circuit, the total energy:

    A

    Increases with time

    B

    Decreases with time

    C

    Remains constant

    D

    Oscillates with time

    Question Tags

    πŸ“š Subject:Physics
    πŸ“‘ Chapter:Alternating Current
    🎯Topic:Resontant Frequency, L-C Oscillations
    πŸŽ“ Ncert Level:Understanding
    🎯Difficulty :Medium
    ⚑ Time Required :30 mins
    πŸ”„Ncert Concepts :L-C Oscillations, Energy Conservation
    3.

    A 16  μF16\,\,\mu F capacitor is charged to a 20  volt{\rm{20}}\,\,{\rm{volt}} potential. The battery is then disconnected and pure 40  mH40\,\,mH coil is connected across the capacitor so that LC{\rm{LC}} oscillations are setup. The maximum current in the coil is

    A

    0.2  A0.2\,\,A

    B

    40  mA40\,\,mA

    C

    2  A2\,\,A

    D

    0.4  A0.4\,\,A

    Question Tags

    πŸ“š Subject:Physics
    πŸ“‘ Chapter:Alternating Current
    🎯Topic:Resontant Frequency, L-C Oscillations
    πŸŽ“ Ncert Level:Application
    🎯Difficulty :Medium
    ⚑ Time Required :3 mins
    πŸ”„Ncert Concepts :Capacitance, Inductance, Energy conservation, LC oscillations
    4.

    A 16  μF16\,\,\mu F capacitor is charged to a 20  volt{\rm{20}}\,\,{\rm{volt}} potential. The battery is then disconnected and pure 40  mH40\,\,mH coil is connected across the capacitor so that LC{\rm{LC}} oscillations are setup. The maximum current in the coil is

    A

    0.2  A0.2\,\,A

    B

    40  mA40\,\,mA

    C

    2  A2\,\,A

    D

    0.4  A0.4\,\,A

    Question Tags

    πŸ“š Subject:Physics
    πŸ“‘ Chapter:Alternating Current
    🎯Topic:Resontant Frequency, L-C Oscillations
    πŸŽ“ Ncert Level:Application
    🎯Difficulty :Medium
    ⚑ Time Required :3 mins
    πŸ”„Ncert Concepts :Capacitance, Inductance, Energy conservation, LC oscillations

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