- #1
Alem2000
- 117
- 0
I was a bit confused by a homwork problem that I was working on. The problem is that I found the flux of a charge and I know the demsions of the Gaussian surface it is encolsed in. It doesn't seem right intuitively to be able to find the location of the charge from this information...but mathmatically I am thinking I can solve for r.
[tex]\Phi=\oint _\mathcal{S} \mathbf{E}\cdot d\mathbf{a} = \frac{q_{enc}}{\epsilon _0}[/tex]
and since electric field is the flux over the area i can find it by
[tex]E=\Phi/A[/tex]
so shouldn't I be able to find the position fo the charge from
[tex]\Phi/A=q/4\pi r^2 \epsilon_0[/tex]
this is really confusing, do I have the theory wrong?
[tex]\Phi=\oint _\mathcal{S} \mathbf{E}\cdot d\mathbf{a} = \frac{q_{enc}}{\epsilon _0}[/tex]
and since electric field is the flux over the area i can find it by
[tex]E=\Phi/A[/tex]
so shouldn't I be able to find the position fo the charge from
[tex]\Phi/A=q/4\pi r^2 \epsilon_0[/tex]
this is really confusing, do I have the theory wrong?