What is conductivity ? On which what factors does it depend and a… - Vidyadip

Question

What is conductivity ? On which what factors does it depend and also write its unit and dimension.

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Answer

→Definition : "Reciprocal of resistivity is called conductivity."
$\therefore \sigma=\frac{1}{ρ}$
→Unit of conductivity $\frac{1}{\Omega m }$ or $\mho m ^{-1}(\mho$ is called mho)
→Dimensional formula of conductivity is $M ^{-1} L^{-3} T^3 A^2$
→The conductivity depends on type of material and temperature. It does not depend on dimension.

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