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

  • question_answer
    A capacitor of 10mF charged up to 250 volts is connected in parallel with another capacitor of 5mF charged up to 100 volts. The common potential is                                  [BHU 2002]

    A)            500 V                                       

    B)            400 V

    C)            300 V                                       

    D)            200 V

    Correct Answer: D

    Solution :

               \[V=\frac{{{C}_{1}}{{V}_{1}}+{{C}_{2}}{{V}_{2}}}{{{C}_{1}}+{{C}_{2}}}=\frac{10\times 250+5\times 100}{10+5}=\,200\,volt\]


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