Parallel-plate capacitor
C = Q/U (definition) = ε_rS/(4πkd) (determination); fixed-charge vs fixed-voltage responses to d/S/ε_r are opposite.
Electric field & charge (senior)Fields, potential, and charged-particle motion.
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Parallel-plate capacitor
Parallel-plate capacitor: C depends on plate area, gap, and dielectric. This “Parallel-plate capacitor” page is an MVP interactive sketch — formulas, controls, and live readouts in the browser; a fuller bench may follow.
Parallel-plate capacitor: C depends on plate area, gap, and dielectric.
Key formulas
C=\frac{Q}{U}C=\frac{\varepsilon_r S}{4\pi k d}E=\frac{1}{2}CU^2
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
- Parallel-plate capacitor: Parallel-plate capacitor: C depends on plate area, gap, and dielectric.
- Classroom focus: fixed-charge vs fixed-voltage responses to d/S/ε_r are opposite.
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 “Parallel-plate capacitor” lab practice?
Tune parameters and match readouts to the “Parallel-plate capacitor” relations — useful for prep and demos.
How do I connect meters?
Ammeter in series; voltmeter in parallel — watch polarity and range.
When does Ohm’s law apply?
For ohmic conductors I=U/R; nonlinear devices need their own curves.