(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

A square surface, 34 mm each side, is immersed with an electric field of magnitude 1700 N/C. The field lines make a 35 degree angle with the normal line. Find the electric flux through the surface.

2. Relevant equations

[itex]\oint[/itex]E[itex]\cdot[/itex]dA

3. The attempt at a solution

Well, since E[itex]\cdot[/itex]dA can be rewritten as EA*cos([itex]\Theta[/itex]), I did that, and since E and Cos([itex]\Theta[/itex]) are constants, I pulled them out of the integral giving me

E*Cos([itex]\Theta[/itex])[itex]\oint[/itex]dA

which comes out to be E*Cos([itex]\Theta[/itex])*A, but when I plug in 1700*Cos(35)*.0034[itex]^{2}[/itex] it's wrong.

Any suggestions?

**Physics Forums | Science Articles, Homework Help, Discussion**

Dismiss Notice

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Homework Help: Flux through a square surface

**Physics Forums | Science Articles, Homework Help, Discussion**