I am writing out the lab for the Milikan Oil Drop experiment and punching out the numbers has shown that my measured charge is off by a factor of 5 from the theoretical amount. theoretical: 1.6e-19 experimental: 3.16e-14 See if I divide this number by 2e5 (which means I am saying there are 200,000 excess electrons on the oil droplet) then I get 1.58e-19 which is really close to theoretical...a little too close. Question: What is the max number of excess electrons that could plausibly be on an oil droplet. The higher the number the better :). I am thinking 50. Searched for answers on the internet but to no avail. Thank you.