The soil resistivity is a measure of the electrical resistance of the soil. And such factor determines the resistance of grounding electrode. In the design of systems that depend on the passing of electric current through Earth’s surface and high voltage transmission systems, it is considered as a critical factor. With this Wenner spacing soil resistivity formula you can calculate electrode spacing, the voltage at inner electrodes and current at outer electrodes.
Wenner spacing soil resistivity formula is the most commonly used formula for the testing resistivity of the soil. This formula is an essential formula in Geophysics.