Charged particle in gravity + E-field
Levitation balance qE = mg (Millikan q = mgd/U); unbalanced a = (qE − mg)/m; horizontal entry gives gravity-corrected parabolic motion.
Electric field & charge (senior)Fields, potential, and charged-particle motion.
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Charged particle in gravity + E-field
Charged droplet in E + g: equilibrium when qE=mg (Millikan experiment). This “Charged particle in gravity + E-field” page is an MVP interactive sketch — formulas, controls, and live readouts in the browser; a fuller bench may follow.
Charged droplet in E + g: equilibrium when qE=mg (Millikan experiment).
Key formulas
qE=mg\text{ (平衡)}a=\frac{qE-mg}{m}q=\frac{mgd}{U}
How to use
- Adjust parameters in the left panel.
- Use play / pause and speed controls.
- Match right-side readouts to the formulas.
- Reset to return to the initial state.
Applications
- Charged particle in gravity + E-field: Charged droplet in E + g: equilibrium when qE=mg (Millikan experiment).
- Classroom focus: unbalanced a = (qE − mg)/m.
FAQ
What does MVP mean on this page?
An interactive sketch with formulas and parameters. Polished Ready labs are the full bench experience.
What does the “Charged particle in gravity + E-field” lab practice?
Tune parameters and match readouts to the “Charged particle in gravity + E-field” relations — useful for prep and demos.
Self-study or classroom?
Both — tune alone, or project “what if…?” demos in class.
Readouts don’t match the formula?
Check units and ranges, then substitute step-by-step from the formula panel.