Experimenting with Electrodes in Water: Physics Theory Needed

[druvinda]

Hi,
i am doing an experiment involving electrodes conected to a circuit and the electrodes submersed into (a) stationary water and (b) flowing water. i am measuring how the current in the curcuit is affected by changing the distance of separation betwwen the electrodes in the stationary and flowing water, and how the speed of the flowing water affects the current. so far my research has lead me to electrolysis and nothing further, and as this is a physics paper, i need a theory related to to physics rather than chemistry. i hope you know of a theory relting to my experiment.
Thanks a lot

 

[Integral]

I though chemistry was physics?

It would help if you told us more of your experiment. How are you measuring the current? How are you inducing the current? What is the fluid?

 

[Astronuc]

Well chemistry is more or less physics of chemicals (elements) and their behavior.

So this appears to be an experiment in electrochemistry, where by you would measure the influence of distance between electrodes, and flow (speed) of water, on the current.

Is a voltage applied between the electrodes? Are the electrodes of the same material or different materials?

Is the purpose of the electrolysis to produce hydrogen?

Look for information on the Nernst equation, e.g.
http://www.science.uwaterloo.ca/~cchieh/cact/c123/nernsteq.html