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PhysicsUnderg
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Homework Statement
A parallel plate capacitor with plates of area A and separation d is imbedded in a large volume filled with a material with electric conductivity σ. Determine the total current I if the two capacitor plates are maintained at a potential difference Vo. Explain how such a device could be used to measure the salinity of salt water.
Homework Equations
E=V/d, V=IR
The Attempt at a Solution
I am probably wrong, but I just calculated E=V/d=IR/d, and then solved for I which gives I=Ed/R=EdσA/L... ?? Any help is appreciated. For some reason, I have a really hard time going about electromagnetism problems and I am not sure even how to think of them.