An oil drop of 12 excess electrons is held stationaty under a constant electric field of `2.55xx10^(4) NC^(-1)` in Millikan's oil drop experi,ment. The density of the oil is `1.26 g cm^(-3)`. Estimate the radius of the drop. `(g = 9.81 ms^(-2) , e = 1.60xx10^(19) C)`

An oil drop of 10 excess electron is held stationary under a consatnt electric field of 3.6xx10^(4)NC^(-1) in Millikan's oil drop experiment. The density of oil is 1.26gcm^(-3) . Radius of the oil drop is (Take, g=9.8ms^(-2), e=1.6xx10^(-19)C )

An oil drop of radius 2 mm with a density 3 g cm^(-3) is held stationary under a constant electric field 3.55 xx 10^5 V m^(-1) in the Millikan's oil drop experiment. What is the number of excess electrons that the oil drop will possess ? Consider g=9.81 m//s^2

If an oil drop of weight 3.2xx10^(-13) N is balanced in an electric field of 5xx10^(5) Vm^(-1) , find the charge on the oil drop.

An oil drop of radiuss 2mm with density 3(g/(cm^3)) is held stationary under a constant vec(E) = 3.35 xx 10^5 V/m in the milikan's drop experiment. What is number of excess electron that oil drop will possess (g=9.81)m/s^2

A water droplet of radius 1 micron in Milikan oil drop appartus in first held stationary under the influence of an electric field of intensity 5.1xx10^(4) NC^(-1) . How many excess electrons does it carry ? Take e = 1.6xx10^(-19) C, g = 9.8 ms^(-2) and density of water of = 10^(3) kg m^(-3) .

In a Millikan's oil drop experiment the charge on an oil drop is calculated to be 16.35 xx 10^(-19) C . The number of excess electrons on the drop is