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

  • question_answer
    In a LCR circuit capacitance is changed from C to 2C. For the resonant frequency to remain unchanged, the inductance should be change from L to       [AIEEE 2004]

    A)            4L  

    B)            2L

    C)            L/2

    D)            L/4

    Correct Answer: C

    Solution :

               \[{{\nu }_{0}}=\frac{1}{2\pi \sqrt{LC}}\] If C changes to 2C then for keeping n0 constant L must change to L/2.


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