JEE Main & Advanced Physics Electrostatics & Capacitance Question Bank Capacitance

  • question_answer
    A 10 micro-farad capacitor is charged to 500 V and then its plates are joined together through a resistance of 10 ohm. The heat produced in the resistance is           [Orissa JEE 2003]

    A)            500 J                                        

    B)            250 J

    C)            125 J                                        

    D)            1.25 J

    Correct Answer: D

    Solution :

               \[U=\frac{1}{2}C{{V}^{2}}=\frac{1}{2}\times 10\times {{10}^{-6}}\times {{(500)}^{2}}\]\[=1.25J\]


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