# specific resistance

## Definition

### Electronics

- 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 specific resistance, the better conductor a material is. Its formula is: r = RA/L, where r is resistivity in ohm-meters, *R* is the resistance in ohms, *A* is the __cross__-sectional area of the material in __square__ meters, and *L* is its __length__ in meters. Also called resistivity, or electric resistivity.

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