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JIPMER Jipmer Medical Solved Paper-2012

  • question_answer
    In an L-C-R circuit inductance is changed from L to L/2. To keep the same resonance frequency, C should be changed to  

    A)  \[2\,C\]              

    B)  \[\frac{C}{2}\]

    C)  \[4\,C\]                              

    D)  \[\frac{C}{4}\]

    Correct Answer: A

    Solution :

                    \[v=\frac{1}{\sqrt{LC}}\] When L is changed to \[\frac{L}{2},\] C must be changed to 2C to keep v same. 


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