BVP Medical BVP Medical Solved Paper-2002

  • question_answer
    A capacitor is a perfect insulator for :

    A)  A.C                                       

    B)  D.C

    C)  both A.C and D.C            

    D)  none of these

    Correct Answer: B

    Solution :

                    Resistance of capacitor \[{{X}_{C}}=\frac{1}{\omega C}\] \[=\frac{1}{2\pi fC}\] For D.C. frequency \[f=0\] \[\therefore \]  \[{{X}_{C}}=\infty \]                    For D.C. resistance of capacitor is infinite.


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