electrical resistivity

- Its
__symbol__is r, or ρ. A measure of the inherent ability of a material to__resist__the flow of current. It is the reciprocal of electrical conductivity, and depending on their resistivities, materials can be classified as insulators, semiconductors, or conductors. The lower the resistivity, the better conductor a material is. Its__formula__is: r = RA/L, where r is resistivity in ohm-meters,is the resistance in ohms,*R*is the*A*__cross__-sectional area of the material in square meters, andis its length in meters. Also called electric resistivity, resistivity, or specific resistance.*L* - synonym electric resistivity

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