Resistance=resisivity(of a certain material)Xlength/cross-sectional area resisivity is expressed in ohm-cm I have a graphite material that is 6ohm-cm the material is .032" thick I will cut the graphite material into a 3' disk I will place an electrode in the center of the disk and have another electrode completely around the circumferance of the disk. What will the resistance of the disk be? How will the resistance between the two electrodes vary with disk diameter? Will the resistance be proportinal to the thickness of the disk? (ie will the resistance of a .064" disk be twice that of a .032" given identical diameters?) Later I will as to calculate resistance with a thickness that varies from the center to the circumfrence.