1 / 8

Capacitance

Capacitance. Physics Department, New York City College of Technology. Capacitor Capacitance Parallel-plate capacitor. Key words. Capacitor. Capacitor A device that can store electric charge. For a given capacitor, we find

hcarlson
Download Presentation

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. Capacitance Physics Department, New York City College of Technology

  2. Capacitor Capacitance Parallel-plate capacitor Key words

  3. Capacitor • Capacitor • A device that can store electric charge

  4. For a given capacitor, we find Q is the amount of charge acquired by each conducting plate of the capacitor V is the voltage applied across it C is called capacitance Capacitance

  5. Capacitance • The unit of capacitance is farad (F) • C does not depend on Q or V • Instead, C depends on • Size • Shape • Relative position of the two conductors • The insulating material between them

  6. Parallel-plate capacitor • Plate area A • Plate separation d • Permittivity of the insulating material ε • Dielectric constant k with • Capacitance C

  7. Energy stored in a capacitor • The electric potential energy stored in a capacitor is • Since , we have

  8. Example #1 • capacitor

More Related