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JEE Main & Advanced Physics Electrostatics & Capacitance Question Bank Capacitance

  • question_answer
    A parallel plate capacitor has circular plates of \[0.08m\] radius and \[1.0\times {{10}^{-3}}m\] separation. If a P.D. of \[100\ volt\]is applied, the charge will be                                                              [ISM Dhanbad 1994]

    A)                    \[1.8\times {{10}^{-10}}C\]

    B)                                      \[\text{1}\text{.8}\times \text{1}{{\text{0}}^{-\text{8}}}C\]

    C)                    \[\text{1}\text{.8}\times \text{1}{{\text{0}}^{-\text{20}}}C\]  

    D)            None of these

    Correct Answer: B

    Solution :

               \[Q=CV=\frac{\pi {{(0.08)}^{2}}{{\varepsilon }_{0}}}{1\times {{10}^{-3}}}\times 100=1.8\times {{10}^{-8}}C\]


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