Question:
What is the SI unit of resistivity?
What is the SI unit of resistivity?
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Resistivity is an intrinsic property; Conductivity ($\kappa$) is its reciprocal ($(\Omega \cdot m)^{-1}$).
Updated On: Apr 30, 2026
- $\Omega$ m
- $\Omega$ m$^{-1}$
- $\Omega^{-1}$ m$^{-1}$
- $\Omega$ m$^{-2}$
Show Solution
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The Correct Option is A
Solution and Explanation
Step 1: Formula
Resistance $R = \rho \frac{l}{A} \implies \rho = R \frac{A}{l}$.
Step 2: Units
Units of $\rho = (\Omega) \times \frac{m^2}{m} = \Omega \cdot m$.
Step 3: Conclusion
The SI unit of resistivity is Ohm-meter ($\Omega$ m).
Final Answer: (A)
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