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NEET Sample Paper NEET Sample Test Paper-56

  • question_answer
    If resistance\[R=10\Omega \], inductance \[L=2mH\]and capacitance \[C=5\mu F\]are connected in series to an AC source of frequency 50Hz, then impedance at resonance will be:

    A) \[Zero\]                         

    B) \[10\Omega \]    

    C) \[1k\Omega \]                            

    D) \[110k\Omega \]

    Correct Answer: A

    Solution :

    [b] At resonance \[{{X}_{L}}={{X}_{C}}\] \[Z=\sqrt{{{R}^{2}}+{{({{X}_{L}}-{{X}_{C}})}^{2}}}\] \[Z=\sqrt{R}\] \[Z=R\] \[Z=10\Omega \]


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