1 / 10

Electric field, Electric Potential Difference and Capacitance

Electric field, Electric Potential Difference and Capacitance. Electric Potential Difference. In an electric field, the change in potential energy per unit charge. The work done moving a test charge in an electric field divided by the magnitude of the test charge.

delano
Télécharger la présentation

Electric field, Electric Potential Difference and Capacitance

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Electric field, Electric Potential Difference and Capacitance

  2. Electric Potential Difference • In an electric field, the change in potential energy per unit charge. • The work done moving a test charge in an electric field divided by the magnitude of the test charge.

  3. Electric Potential Difference Equations V = electric potential difference in volts (V) W = work in Joules (J) q‘ = test charge in Coulombs (C)

  4. Electric Potential Difference Equations Since W = Fd W = work in J F = force in N d = displacement in m Then, Recall that Therefore,

  5. Capacitance • The ability of a material to store electric charges. • The ratio of an object’s stored charge to its potential difference • Measured in farads (F)

  6. Capacitance equations C = capacitance in farad (F) q = charge in C V = potential difference in volts Note: 1 F = 1 C/V

  7. Capacitor A device with a specific capacitance that is used in electrical circuits to store charge.

  8. A simple capacitor

  9. Capacitance Equations C = capacitance in F K = dielectric constant (no unit) A = area of the plates in m2 k = 9.0 x 109 Nm2/C2 d = distance of separation between the plates in m

  10. Energy stored in capacitors

More Related