Measurement of electrical resistivity in metallic conductors

Abstract

The electrical resistivity is an important characteristic of the materials, since different materials also have different values of resistivity. These figures may indicate whether the material is conductive, semiconductive and insulating electric. The metallic conductors are those with lower values of resistivity. The electrical resistance of a thread depends directly on the resistivity of material that is. Some substances, like metals and salt water, well lead to electricity. Others, such as rubber, plastic and glass, resist the flow of electricity. This fact is directly related to the resistivity of these materials. Measurements of resistivity are important in various branches of Engineering, as the analysis of soils. The electrical properties of the soil can be measured in many different ways, there are several methods of measurement. The characteristics of the rocks, for example, can be assessed by measuring the resistivity of the same, the second technical expertise. The inverse of resistivity is called conductivity. Measurements of conductivity are made mainly in industrial processes to obtain information on total ionic concentrations (eg dissolved compounds) in aqueous solutions. Some of the most widely used applications are water purification and measurement of concentration levels in solutions. Thus the main purpose of this study is to determine the resistivity of a metal driver for assessing the intensity of voltage and current it down, as well as its geometrical characteristics.