AMU Medical AMU Solved Paper-1998

  • question_answer
    A series RLC circuit is connected to 230V source where\[R=40\,\Omega ,L=2H,C=50\mu F\]. The amplitude of current at resonance is

    A)  6.25 A           

    B)  5.25 A

    C)  5.75 A           

    D)  8.13 A

    Correct Answer: C

    Solution :

    : At resonance\[{{X}_{L}}={{X}_{C}}\] \[\therefore \]\[I=\frac{E}{\sqrt{{{R}^{2}}+{{({{X}_{L}}-{{X}_{C}})}^{2}}}}\] Or \[I=\frac{E}{R}=\frac{230}{40}=5.75A\]


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