# Define the Term 'Electrical Conductivity' of a Metallic Wire. Write Its S.I. Unit. - Physics

Define the term 'electrical conductivity' of a metallic wire. Write its S.I. unit.

#### Solution

The electrical conductivity of a metallic wire is defined as the ratio of the current density to the electric field it creates.
Electrical conductivity, σ J/E S.I. unit = (mho m-1) or (ohm m).-1

Concept: Electrical Resistivity and Conductivity
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