# 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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