In a Millikan's oil drop experiment the charge on an oil drop is calcu – McqOptions

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1.	In a Millikan's 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 [MNR 1998]
A.	3.9
B.	4
C.	4.2
D.	6
Answer» C. 4.2

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