please use link to complete: https://www.thephysicsaviary.com/Physics/Programs/Labs/MillikanOilDropLab/ index.html

We are now in the early 1900s. At this point we know that there are negative particles that we can be deflected by a capacitor's electric field and/or an electromagnets magnetic field. As we know, J. J. Thomson had found the charge-to-mass ratio of these particles and some people have begun to call these particles "electrons" possibly from the Greek word lektron meaning amber. The experiment we are doing here is based on the one conducted by Robert Millikan starting in 1908 that won him the Nobel Prize in Physics in 1923. You will spray oil drops into the electric field of a capacitor and try to find the charge that the drops acquired when being sprayed. Spritz some oil drops into the region between the plates and see if you can get a drop to remain motionless. If you don't, spritz again until a drop remains motionless. Draw a free-body-diagram of the drop.