- #1
cragar
- 2,552
- 3
when Robert Millikan did the oil drop experiment to measure the charge of an electron .
they balanced the gravitational force of the oil drop with the electric field .
did they use F=qE , did they know how many electrons were in their oil drops .
they balanced the gravitational force of the oil drop with the electric field .
did they use F=qE , did they know how many electrons were in their oil drops .