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JEE Main & Advanced Physics Alternating Current / प्रत्यावर्ती धारा Question Bank ac Circuits

  • question_answer
    A 10 ohm resistance, 5 mH coil and 10 mF capacitor are joined in series. When a suitable frequency alternating current source is joined to this combination, the circuit resonates. If the resistance is halved, the resonance frequency [MP PET 1995]

    A)            Is halved                                

    B)            Is doubled

    C)            Remains unchanged         

    D)            In quadrupled

    Correct Answer: C

    Solution :

               Resonant frequency \[=\frac{1}{2\pi \sqrt{LC}}\]does not depend on resistance. 


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