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In Millikan's experiment, static electric charge on the oil drops has bein obtained by shining X-rays. If the static electric charge on the oil drop is - I.282x 10^-18 C, the number of electrons present on the oil drop is.

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answer is 8.

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Detailed Solution

Formula of charge:

$charge = number of electrons \times charge of 1 electron 1.282 \times 10^{- 18} = number of electrons \times 1.602 \times 10^{- 19} number of electrons = 8$

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