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Explore how a capacitor works! Change the size of the plates and the distance between them. Change the voltage and see charges build up on the plates. View the electric field, and measure the voltage. Connect a charged capacitor to a light bulb and observe a discharging RC circuit.
- English
Explore how a capacitor works! Change the size of the plates...
- Capacitor Lab
Capacitor Lab: Basics - PhET Interactive Simulations
- English
Example \(\PageIndex{1A}\): Capacitance and Charge Stored in a Parallel-Plate Capacitor. What is the capacitance of an empty parallel-plate capacitor with metal plates that each have an area of \(1.00 \, m^2\), separated by 1.00 mm? How much charge is stored in this capacitor if a voltage of \(3.00 \times 10^3 V\) is applied to it? Strategy
Capacitor Lab: Basics - PhET Interactive Simulations
Describe the action of a capacitor and define capacitance. Explain parallel plate capacitors and their capacitances. Discuss the process of increasing the capacitance of a dielectric. Determine capacitance given charge and voltage. A capacitor is a device used to store electric charge.
Parallel-Plate Capacitor. The parallel-plate capacitor has two identical conducting plates, each having a surface area A, separated by a distance d. When a voltage V is applied to the capacitor, it stores a charge Q, as shown. We can see how its capacitance may depend on A and d by considering characteristics of the Coulomb force.
Objectives To verify the predictions of the capacitance equation To make and measure the capacitance of a simple parallel plate capacitor Equipment Electrometer, electrostatics voltage source, insulated sphere, proof plane, and demonstration capacitor.
Theoretically, the capacitance of parallel-plate capacitors is . C = ε A. P 0 / d. (4.2) where the subscript “P” denotes “parallel plate.” Here, A is the area of one of the plates, d is the distance between them, and ε0 is a constant called the “permittivity of free space,” which has a value of 8.85 × 10-12 C2 / N-m2, in SI units.
