COMEDK · Physics · 19. Current Electricity
The SI unit of electrical conductivity is :
- A \(\mathrm{S} \mathrm{~m}^{-1}\)
- B \(\Omega \mathrm{~m}\)
- C S m
- D \(\Omega \mathrm{~m}^{-1}\)
Answer & Solution
Correct Answer
(A) \(\mathrm{S} \mathrm{~m}^{-1}\)
Step-by-step Solution
Detailed explanation
Electrical conductivity, denoted by \(\kappa\) or \(\sigma\), is defined as the reciprocal of electrical resistivity, \(\rho\). The SI unit of resistivity \(\rho\) is \(\Omega \cdot \text{m}\). Therefore, the SI unit of conductivity \(\sigma = \dfrac{1}{\rho}\) is…
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