Physics help?

[Anonymous No.1922609]

Dear /sci/,

My ph lab was a "Design your own experiment" and I have no idea wat do...

The point of the lab is to find the resistivity of the water between the two electrodes. My teacher gave us a hint and that was to set up the multimeters as shown in that circuit. Doing so the resistance between the electrodes was found to be 62437 or so ohms.

Using the equation R=pL/A, where p is resistivity L is the radius and A is the area of the circle, yields a result much lower than the one I found by googling for the answer.

Anybody have an idea of what I'm doing wrong? I also know the electric field at any point from a previous lab if that would help.

[Anonymous No.1922641]

i know of the equation p=E/J=AE/I but im not sure if it would help since E isnt constant afaik

perhaps you are using the wrong area?

[Anonymous No.1922663]

I'm not sure what other area I would use? Whats upsetting is that every other section got to use parallel electrodes instead of circular ones, so I can't ask for help from peers and nobody in my class knows how to do it!

[Anonymous No.1922821]

bump

[Anonymous No.1922898]

My guess is that you need to consider the volume between electrodes.