- #1
Momentous
- 18
- 0
Homework Statement
Consider a sphere centered at origin with radius R > z0. By calculating the total flux
ϕ = ∫E . da through the sphere, explicitly show that ϕ = q/ϵ0
Homework Equations
Gauss's Law
The Attempt at a Solution
I have a general idea of what to do, but I just want to make sure I don't screw up from the start. I think that I have to do a surface integral. The instructions say to integrate over spherical coordinates.
I'm just confused because I usually think of spherical coordinates as 3 dimensions, but a surface integral is 2-D.
I figured that I would change dA into r^2 sinθ dr dϕ dθ, and integrate from there.
I'd use 0 to R for radius, 0 to 2∏ for ϕ, and 0 to pi for θ. I figure you can take E out of the integral because it is constant and always normal to the Surface Area.
Am I on the right track with this one?