# Gauss's law ?

1. Jan 28, 2009

### eRa

Hi there,

I have a question for you guys. It might sound stupid, but I don't get the material; my teacher can't teach!!! and your help is very appreciated

I am reading about Gauss's law where they come to the conclusion that flux=charge/Eo

my question is why won't the net electric field be zero since we can cancel the field lines?

2. Jan 28, 2009

### Staff: Mentor

With what?

3. Jan 28, 2009

### Staff: Mentor

Why won't the net electric field of what be zero? What field lines are canceling?

(That link describes the field from a point charge.)

4. Jan 28, 2009

### eRa

hi.. sorry I didn't mean to be unclear

True ,, the link describes the field from a point charge so each field line has another field line that is in the opposite direction.. so why don't all the field lines cancel?
I am sorry I don't know how to explain it better

5. Jan 28, 2009

### tiny-tim

Welcome to PF!

Hi eRa! Welcome to PF!
Flux is through a surface

all the field lines in the diagram are going the same way through that surface.