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Millikan’s Oil Drop Experiment

Learn about Millikan’s famous Oil Drop Experiment and how it determined the charge on a single electron. Explore the apparatus, forces at play, terminal velocities, Stokes’ Law, equations, and results obtained from trials. Delve into the process of calculating electron charge through integer multiples of a guess value.

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Millikan’s Oil Drop Experiment

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Presentation Transcript

  1. Millikan’s Oil Drop Experiment

  2. What is the charge on a single electron?

  3. Apparatus

  4. Forces- Falling FD Terminal Velocity – Net Force is Zero mg

  5. Forces - Rising Terminal Velocity – Net Force is Zero FE FD mg

  6. Stokes’ Law

  7. Equations

  8. 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

  9. Integer Multiples

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