An Oil droplet with a radius of 0.03 mm is observed to hover motionless in space between two vertically separated metal plates. The plates are 3 cm apart and are charged to a potential difference of 500 Volts. The density of oil used for this experiment is 500 kg/m3.
A) What is the magnitude of the Electric Field produced by the plates?
B) What is the net charge on the oil drop?
C) How many excess electrons must the oil drop have?