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JEE Main & Advanced Physics Electrostatics & Capacitance Question Bank Grouping of Capacitors

  • question_answer
    Two capacitors each of \[1\mu F\] capacitance are connected in parallel and are then charged by \[200\ volts\] d.c. supply. The total energy of their charges (in joules) is                                                                                [MP PMT 1990, 2002]

    A)                                                      0.01                                          

    B)            0.02

    C)                    0.04                                  

    D)            0.06

    Correct Answer: C

    Solution :

               \[U=\frac{1}{2}C{{V}^{2}}=\frac{1}{2}\times 2\times {{(200)}^{2}}\times {{10}^{-6}}=0.04J\]


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