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

  • question_answer
    A finite ladder is constructed by connecting several sections of \[2\mu F,\ 4\mu F\] capacitor combinations as shown in the figure. It is terminated by a capacitor of capacitance C. What value should be chosen for C such that the equivalent capacitance of the ladder between the points A and B becomes independent of the number of sections in between [MP PMT 1999; KCET (Engg./Med.) 1999]

    A)                                                      \[4\mu F\]

    B)                    \[2\mu F\]

    C)                    \[18\mu F\]

    D)                    \[6\mu F\]

    Correct Answer: A

    Solution :

               If the value of C is chosen as \[4\mu F\], the equivalent capacity across every part of the section will be \[4\mu F\].


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