To analyze the experiment used to determine the properties of an electron. In 19
ID: 1001404 • Letter: T
Question
To analyze the experiment used to determine the properties of an electron. In 1909, Robert Millikan performed an experiment involving tiny, charged drops of oil. The drops were charged because they had picked up extra electrons. Millikan was able to measure the charge on each drop in coulombs. Here is an example of what his data may have looked like.
In Millikan's experiment, the charge on each drop of oil was measured in coulombs. Imagine the same experiment, but with charges measured in a fictitious unit called a zeet (Z).
What is the charge on an electron in zeets?
Drop Charge (C) A 3.20×1019 B 4.80×1019 C 8.00×1019 D 9.60×1019Explanation / Answer
Charge on an electron in zeets will be the highest common factor for the values from A to E.
Highest common factor (the smallest difference between 2 values) in this case: (4.42 - 3.71) 10^-14 = (4.77 - 4.24) 10^-14 = 0.53 * 10 ^ -14 zeets
In case of the given data from the Millikan experiment, the highest common factor = 1.6 * 10^-19 coulomb which is the electron charge in coulombs
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