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Electricity — Science STD 10 — Question

Tamilnadu BoardEnglish MediumSTD 10ScienceElectricity2 Marks
Question
Define specific resistance electrical conductivity? Give its unit.
✓

Answer

The reciprocal of electrical resistivity of a material is called its electrical conductivity.
$
\sigma=\frac{1}{\rho}
$
Its unit is ohm ${ }^{-1}$ metre $^{-1}$. It is also represented as mho metre ${ }^{-1}$.

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