Gauss's Law Question

  • Thread starter gunster
  • Start date
  • #1
7
0

Homework Statement


Consider a cube with one corner at the origin
and with sides of length 10 cm positioned
along the xyz axes. There is an electric field

E= (18, 235y, 0)

through the region that has a constant x component and a y component that increases linearly with y. Start by drawing a diagram showing ˆn and E~ for each side of the cube.
How much change is inside the cube?

Homework Equations



flux = integral (E * dA)
flux = Q/epsilon nought


The Attempt at a Solution



Tried integrating from 0 to 10 for the E to find change in the electric field

then set Q/A = integral (E * dA)

However, I don't know how to integrate it cause I don't know what the direction of dA is in this case. Is dA same direction as E? Also, what AREA do I use? I know its the surface area but idk what the proper area would be for flux going through a cube :/
 

Answers and Replies

Related Threads on Gauss's Law Question

  • Last Post
Replies
15
Views
2K
  • Last Post
Replies
2
Views
6K
  • Last Post
Replies
7
Views
2K
  • Last Post
Replies
2
Views
2K
  • Last Post
Replies
7
Views
941
  • Last Post
Replies
6
Views
2K
  • Last Post
Replies
2
Views
2K
  • Last Post
Replies
13
Views
4K
  • Last Post
Replies
9
Views
1K
  • Last Post
Replies
4
Views
6K
Top