CET Karnataka Medical CET - Karnataka Medical Solved Paper-2015

  • question_answer
    A parallel plate capacitor is charged and then isolated. The effect of increasing the plate separation on charge, potential and capacitance respectively are

    A)  Increases, decreases, decreases

    B)  Constant, increases, decreases

    C)  Constant, decreases, decreases

    D)  Constant, decreases, increases

    Correct Answer: B

    Solution :

    : As the capacitor is isolated after charging, charge Q on it remains constant. Plate separation d increases, capacitance decreases as \[C=\frac{{{\varepsilon }_{0}}A}{d}\] and hence, potential increases as \[V=\frac{Q}{C}\].


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