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 doesnt seem right intuitively to be able to find the location of the charge from this information....but mathmatically im thinking I can solve for r.(adsbygoogle = window.adsbygoogle || []).push({});

[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 shouldnt 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?

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# Homework Help: Confused about Flux

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