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neu
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Homework Statement
Use an integral form of the Gauss law to show how the magnitude of D inside the capacitor depends on the charge on the plates of a parallel plate capacitor and their area.
Homework Equations
Gauss
[tex]\int{E.nda}=\frac{\rho}{\epsilon_{0}}[/tex]
[tex]\nabla.D=\rho[/tex]
where div, D, E all vectors
The Attempt at a Solution
so [tex]\epsilon\int{D.nda}=\frac{\rho}{\epsilon_{0}}[/tex]
where integrals are all closed loops.
so integral over area = 2 pi r^2 : [tex] D.2.\pi.r^2=\epsilon_{r}\rho[/tex]
that right?