Resistance to Flow of Current to Scratched Electrodes

The electrolyte resistance to flow of current to a scratched electrode is calculated assuming the scratch to be shallow and represented by a rectangular planar strip. The resulting equation agrees with experimentally measured ohmic resistances to long, narrow rectangular strip electrodes. Also presented are corrections to the previously published formula for the ohmic resistance to a disk electrode due to finite dimensions of the counterelectrode and the electrochemical cell for systems with radial symmetry.