How would one determine the charge density of a fluid?(adsbygoogle = window.adsbygoogle || []).push({});

I'm using the equation of I = qnvA . Amperes = charge of electron * charge density * velocity * Area. The only thing I'm not sure of is how to determine charge density. I've read several websites and I have a few textbooks here. Everything talks about it differently, and nothing specifically references a fluid. Many talk about solids, but not fluids. Are the properties between solids and fluids for charge density calculations the same? Can someone point me to a formula?

Thanks

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# Charge Density

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