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Homework Help: Excess Electrons, Milikan Oil Drop

  1. Mar 15, 2014 #1
    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.
    Last edited: Mar 15, 2014
  2. jcsd
  3. Mar 15, 2014 #2


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    2017 Award

    Show a little more of your experiment and observations, please. As wel as from your calculations. Who knows, maybe we can help. Your question is weird, to say the least.
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