An oil drop of radius 2 {mm} with a density 3 {g} {cm}^{-3} is held stationary under a constant electric field 3.55 \times 10^{5} {Vm}^{-1} in the Millikan's oil drop experiment. What is the number of excess electrons that the oil drop will possess? (Take, g=9.81 {m} \/ {s}^{2} ) [18 Mar 2021 Shift 1]

JEE Main 18 March 2021 Shift 1 Solved Paper

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An oil drop of radius 2mm with a density 3gcm−3 is held stationary under a constant electric field 3.55×105Vm−1 in the Millikan's oil drop experiment. What is the number of excess electrons that the oil drop will possess? (Take, g=9.81m∕s2 )

[18 Mar 2021 Shift 1]

48.8×1011
1.73×1010
17.3×1010
1.73×1012

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