Question
What is conductivity? State its SI unit.
✓
Answer
i. Reciprocal of resistivity is called as conductivity of a material. Formula: $\sigma=\frac{1}{\rho}$
ii. SI unit: $\left(\frac{1}{\text { ohmm }}\right)$ or siemens/metre
ii. SI unit: $\left(\frac{1}{\text { ohmm }}\right)$ or siemens/metre
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