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JEE Main & Advanced Physics Electrostatics & Capacitance Question Bank Capacitance

  • question_answer
    A capacitor is charged to 200 volt it has 0.1 coulomb charge. When it is discharged, energy will be              [MP PET 2003]

    A)            1 J

    B)                                      4 J

    C)            10 J

    D)            20 J

    Correct Answer: C

    Solution :

                       Given Þ \[V=200\,volt,\] \[Q=0.1\,C\] As energy \[U=\frac{QV}{2},\,\,U=\frac{0.1\times 200}{2}\]\[=10\,Joule\]           


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