Electrical Conductivity

Electrical conductivity or specific conductance is a measure of a material's ability to conduct an electric current. When an electrical potential difference is placed across a conductor, its movable charges flow, giving rise to an electric current. The conductivity is defined as the ratio of the current density J to the electric field strength E: It is also possible to have materials in which the conductivity is anisotropic, in which case is a 3×3 matrix (or more technically a rank-2 tensor) which is generally symmetric. Conductivity is the reciprocal (inverse) of electrical resistivity, , and has the SI units of siemens per metre (S·m-1) and CGSE units of inverse second (s 1): Electrical conductivity is commonly represented by the Greek letter , but (esp. in electrical engineering science) or are also occasionally used. An EC meter is normally used to measure conductivity in a solution.

Klappentext

Electrical conductivity or specific conductance is a measure of a material's ability to conduct an electric current. When an electrical potential difference is placed across a conductor, its movable charges flow, giving rise to an electric current. The conductivity s is defined as the ratio of the current density J to the electric field strength E: It is also possible to have materials in which the conductivity is anisotropic, in which case s is a 3×3 matrix (or more technically a rank-2 tensor) which is generally symmetric. Conductivity is the reciprocal (inverse) of electrical resistivity, , and has the SI units of siemens per metre (S·m-1) and CGSE units of inverse second (s-1): Electrical conductivity is commonly represented by the Greek letter s, but (esp. in electrical engineering science) or are also occasionally used. An EC meter is normally used to measure conductivity in a solution.