# Electric Field Lines

1. Feb 2, 2013

### aaronfue

1. The problem statement, all variables and given/known data

A uniform electric field of magnitude 6.5 $\frac{N}{C}$ passes through a circle of radius 12 cm. What is the electric flux through the circle when its face is perpendicular to the field lines.

3. The attempt at a solution

The only problem with this question is picturing the field lines. I initially thought that "perpendicular" meant 90°.

I tried to apply that angle to the flux formula, but I need to picture this surface? I'd appreciate an explanation of the EF and field lines. Or if there is a website that I can check that explains and shows how electric fields and field lines are shown.

Last edited: Feb 2, 2013
2. Feb 2, 2013

### Dick

The surface is a disk. And yes, perpendicular means 90 degrees. The E field is normal to the surface. What's the definition of 'flux'? You should be able to look that up. There aren't very many easier flux questions around.

Last edited: Feb 2, 2013