Lecture04_Kim

Lecture04_Kim - Lecture 4-1 Gausss Law Qualitative...

Info iconThis preview shows pages 1–5. Sign up to view the full content.

View Full Document Right Arrow Icon
Lecture 4-1 Gauss’s Law: Qualitative Statement (Review) Form any closed surface around charges Count the number of electric field lines coming through the surface, those outward as positive and inward as negative. Then the net number of lines is proportional to the net charges enclosed in the surface .
Background image of page 1

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

View Full Document Right Arrow Icon
Lecture 4-2 Electric flux (Review) # of field lines N = density of field lines x “area” To state Gauss’s Law in a quantitative form, we first need to define Electric Flux. Surface can be of any shape Surface can be open or closed Must specify “which way” N E A E An  E E An    “area”=A = A cos if A is tilted A
Background image of page 2
Lecture 4-3 Electric flux through Arbitrary Surface General definition of electric flux: E S E ndA  (must specify sense , i.e., which way ) E E An Divide the surface into many very small, nearly flat plaquettes and sum over the contributions from all of them.
Background image of page 3

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

View Full Document Right Arrow Icon
Lecture 4-4 Electric Flux through Closed Surface En E S E ndA  This integral is over a CLOSED surface.
Background image of page 4
Image of page 5
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

Page1 / 14

Lecture04_Kim - Lecture 4-1 Gausss Law Qualitative...

This preview shows document pages 1 - 5. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online