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12th Class Physics Electric Charges and Fields Question Bank Case Based (MCQs) - Electric Charges and Fields

  • question_answer
    If in Millikan's oil drop experiment, charges on drops are found to be \[8\mu C,\,12\mu C,\,20\mu C\], then quanta of charge is

    A) \[8\mu C\]

    B) \[20\mu C\]

    C) \[12\mu C\]

    D) \[4\mu C\]

    Correct Answer: D

    Solution :

    Millikan's experiment cofirmed that the charges are quantized, i.e., charges are small integer multiples of the base value which is charge on electron. The charges on the drops are found to be multiple of 4. Hence, the quanta of charge is \[4\,\mu C\].


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