Electrical resistivity

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Electrical resistivity is a concept in electrical engineering. It is a measure of how much a material stops the flow of electric current through it. Most metals have very low electrical resistivity.

More precisely, "the resistivity of a material of conductor is the resistance of its unit area of cross section and per unit of its length" The International System of Units uses the ohm metre for measuring how much electrical resistivity there is. Electrical resistivity is the inverse of electrical conductivity. This term is more used for semiconductors and insulators.