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Millikan’s Oil Drop Experiment. What is the charge on a single electron?. Apparatus. Forces- Falling. F D. Terminal Velocity – Net Force is Zero. mg. Forces - Rising. Terminal Velocity – Net Force is Zero. F E. F D. mg. Stokes’ Law. Equations. Results. Trial 1 1.2 C Trial 2 2.3 C
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Forces- Falling FD Terminal Velocity – Net Force is Zero mg
Forces - Rising Terminal Velocity – Net Force is Zero FE FD mg
Results Trial 1 1.2 C Trial 2 2.3 C Trial 3 4.9 C Trial 4 7.1 C Guess for e – 1.2C