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JEE Main & Advanced Physics Electrostatics & Capacitance Question Bank Critical Thinking

  • question_answer
    Consider the situation shown in the figure. The capacitor A has a charge q on it whereas B is uncharged. The charge appearing on the capacitor B a long time after the switch is closed is                        [IIT-JEE (Screening) 2001]

    A)            Zero

    B)                                      \[q/2\]

    C)            q    

    D)            \[2q\]

    Correct Answer: A

    Solution :

               The \[\pm q\] charges appearing on the inner surfaces of A, are bound charges.  As B is uncharged initially, as it is isolated, the charges on A will not be affected on closing the switch S.  No charge will flow in to B.


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