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how do i get current through a surface

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Hello,
i am working in 3D and i need the current through a surface, i got a plot of current density which i can multiply by the surface area to get the current.
but i noticed that the current density i read is perculair to a position but i would like to know the current through a face not at a paticular point.
any help?
thanks?

1 Reply Last Post Apr 1, 2011, 7:47 a.m. EDT
Ivar KJELBERG COMSOL Multiphysics(r) fan, retired, former "Senior Expert" at CSEM SA (CH)

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Posted: 1 decade ago Apr 1, 2011, 7:47 a.m. EDT
Hi

make in integration operatior on the surface of interest, then in the Postprocessing "derived values" Global one get the integrated value, or just integrate over the boundary in the "derived value" node

--
Good luck
Ivar
Hi make in integration operatior on the surface of interest, then in the Postprocessing "derived values" Global one get the integrated value, or just integrate over the boundary in the "derived value" node -- Good luck Ivar

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