Question

Consider a Millikan's oil drop experiment where the two parallel plates are about 30mm apart and are connected to a 800V DC power supply .The electric field just supports an oil drop of mass 2x10^-15 kg. Calculate the charge on the drop of oil .Hence estimate the number of excess electrons acquired by the drop of oil

Answer 1

answer:

mass= 2×10^-15 kg

Energy=8000v

distance=30 mm

can be solved by formula e=mg /q

then electrons no. we can find