10 - Capacitance I

# 10 - Capacitance I - Physics 212 Fall 2009 Capacitance I...

This preview shows pages 1–6. Sign up to view the full content.

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: Physics 212 - Fall 2009 Capacitance I 9/14/2009 Schedule Today - Capacitors I Tuesday - New homework available Wednesday - CAPA hour, Exam Friday - Capacitors II What is a Capacitor? Useful Device - Stores charge Can be any shape, big or small Parallel plates is a common design Material between plates can be air Most often is dielectric material Plates have equal and opposite charges ±q Capacitor said to have the amount of charge q Capacitor Circuit Use a battery to put the two plates at different electric potential Get positive plate and a negative plate q = CV The amount of charge stored (q) depends on C - Capacitance - units: Farads=Coulomb/Volt V - potential difference across the plates Typical circuit diagram Note shape of battery icon - Negative side is shorter + Terminal of battery and h-plate (positive plate) are at the same potential- Terminal of battery and l-plate (negative plate) are at the same potential Analyzing the Capacitor Parallel Plate Capacitor Charge plates of area A with charge q, Fnd E,V,C use Gauss’ Law to relate q and E ε E ⋅ d A = q ∫ ⇒ ε EA = q ¡ield E and potential...
View Full Document

## This note was uploaded on 10/03/2011 for the course PHYS 212 taught by Professor Tedeschi during the Fall '08 term at South Carolina.

### Page1 / 13

10 - Capacitance I - Physics 212 Fall 2009 Capacitance I...

This preview shows document pages 1 - 6. Sign up to view the full document.

View Full Document
Ask a homework question - tutors are online