# resistivity

## Definitions

### General Science

### Cars & Driving

- noun the ability of a material not to conduct electricity.

### Electronics

- 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, *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 __electric__ resistivity, or specific resistance. - abbreviationrho (ρ)
- symbolr
__symbol__ for __volume charge density__, or charge density (2).

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