Physics, 01.05.2021 04:40, bakoeboo

In Millikan's experiment in the figure below, an oil droplet of mass 4.45 fg has an excess charge of five electrons. An electric field has been applied,
and the droplet is levitating. What is the magnitude of the electric field?
(Units: N/C) note: 1fg = 10^-15g=10^-18kg

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In Millikan's experiment in the figure below, an oil droplet of mass 4.45 fg has an excess charge...