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Discussion :: Network Analysis and Synthesis

  1. A coil of resistance R and inductance L is connected in series with 5 μF capacitor. The source frequency is equal to resonance frequency and circuit current is 0.5 A. Another 5 F capacitor is connected in parallel with the above capacitor. The circuit current will be

    2. A.
    0.5 A
    B.
    more than 0.5 A
    C.
    less than 0.5 A
    D.
    0.5 A or less

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    Answer : Option C

    Explanation :

    Since C increases, the circuit will not be in resonance. Therefore, current decreases (In series resonant circuit current is maximum at resonance).

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