##  [Electrical Conductivity](/electrical-conductivity) 

  ##  [Electrical Conductivity](https://engineering.quantumdictionary.io/electrical-conductivity-0) 

  

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**Engineering & Applied Technologies Dictionary**

 







 

 

 

 



 

 

 

 

Definition

A material property that quantifies the ability to conduct electric current; commonly denoted σ (sigma) and defined, in the continuum linear regime, by the constitutive relation J = σ E (or J = σ·E for tensorial σ), with SI unit siemens per metre (S·m−1). It is the reciprocal of electrical resistivity ρ when scalar.