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VIT Engineering VIT Engineering Solved Paper-2011

  • question_answer
    In a Millikans oil drop experiment the charge on an oil drop is calculated to be\[6.35\times {{10}^{-19}}C\]. The number of excess electrons on the drop is

    A)  3.2             

    B)  4

    C)  4.2             

    D)  6

    Correct Answer: B

    Solution :

    Number of electron \[n=\frac{Q}{e}\] \[=\frac{6.35\times {{10}^{-19}}}{1.6\times {{10}^{-19}}}\] \[=3.9=4\]


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