Lec 3 | MIT 8.02 Electricity and Magnetism, Spring 2002

Electric Flux
Gauss's Law
Examples

Romanian translation courtesy of Mihai Olteanu.

View the complete course at: http://ocw.mit.edu/8-02S02

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[ATIhYdrax]

Walter Lewin: Making other professors look like shit!

[Incrue]

this is what happens when one loves what he does

[partonace]

For Gauß' Rule: h t t p : / / hyperphysics . phy-astr . gsu . edu/hbase/electric/gaulaw . h t m l (mind the gaps!)

[4thKyuubi]

@4thKyuubi i mean why would the gravitational field of a cubical planet WOULD NOT* be 0?

[4thKyuubi]

around 22:28, why would the gravitational field of a cubical planet be 0?

[4thKyuubi]

@slimmerikje oh, he said that the book writes n*dA simply as dA. I assumed that n was the normal force? And dA is the surface area of that specific element right?

[wayly2000]

omg LOL i love his food pins... he wore an egg in the last lecture and a bagel in this one

[slimmerikje]

@4thKyuubi

dA is a surface element, explained at the beginning of the lecture. the lenght of the vector dA is the magnitude of the surface element (explained at 02.02), this has nothinf to do with forces, don't know where you see forces.. look again please..

[slimmerikje]

@4thKyuubi

because Qinside = 0 (inside the chosen gauss surface), that's a key argument. If you don't understand that i would stop following.

[kevineugenius]

Anyone else get 'Fitness Sexy Torture Workout" as a suggested video after this one?

[4thKyuubi]

at 17:47 why is the electric field = 0?

[4thKyuubi]

The normal force is dA?