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Discussion :: Materials and Components

  1. If a capacitor C having selectivity factor Q is scaled down in all its dimensions by a factor K without any altering the dielectric material, the new capacitor will have capacitance and selectivity as

  2. A.
    C,
    B.
    , Q
    C.
    ,
    D.
    C, K

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    Answer : Option B

    Explanation :

    Since the dimension of plates is scaled down by K, the area decreases by a factor of K2, the distance between plates decreases by a factor of K.

    Therefore, capacitance changes to .

    The selectivity will not be affected.


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