lecture5 - Gauss's Law ctric Flux Ele Gauss's Law ple Exam...

This preview shows pages 1–10. Sign up to view the full content.

Gauss’s Law Electric Flux Examples

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

View Full Document
Gauss’s Law Gauss’s Law What’s in the box ??
Quiz Quiz What’s in the box ?? A) Negative charges B) Positive charges C) No charge

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

View Full Document
Gauss’s Law Gauss’s Law What’s in the box ?? Net # of lines going out is related to the charge enclosed
Recall electric flux: dA uur E ur A E d E = - Scalar quantity - related to number of filed lines

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

View Full Document
For a closed surface S, the element of area vectors point outward from the surface. The surface may be a real surface or just an ‘imaginary’ mathematical surface of our choosing. dA uur
Gauss’s Law Gauss’s Law For a closed surface S, take the outward direction as the direction for ; then… dA r Net outward flux through S net charge enclosed by S ο ε = 2 12 2 "permittivity of vacuum" 8.85 10 N C m ε - = 1 and 4 e k π =

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

View Full Document
Or… The closed “Gaussian surface” S is arbitrary (and usually exists only in your imagination). o enclosed net S net Q A d E ε , = = Φ r r
Example : point charge + q E S: sphere, radius r, centered on the charge.

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.

This note was uploaded on 05/02/2010 for the course PHYSICS 1E03 taught by Professor Jopko during the Spring '08 term at McMaster University.

Page1 / 19

lecture5 - Gauss's Law ctric Flux Ele Gauss's Law ple Exam...

This preview shows document pages 1 - 10. Sign up to view the full document.

View Full Document
Ask a homework question - tutors are online