JEE Mains · Physics · STD 12 - 3. current electricity
In the following \('I'\) refers to current and other symbols have their usual meaning, Choose the option that corresponds to the dimensions of electrical conductivity
- A \(M^{-1} L^{-3}T^3I\)
- B \(M^{-1}L^{-3}T^3I^2\)
- C \(M^{-1}L^3T^3I\)
- D \(ML^{-3}T^{-3}I^2\)
Answer & Solution
Correct Answer
(B) \(M^{-1}L^{-3}T^3I^2\)
Step-by-step Solution
Detailed explanation
We know that resistivity \(\rho=\frac{R A}{\ell}\) Conductivity \(=\frac{1}{\text { resistivity }}=\frac{\ell}{R A}\) \(=\frac{\ell I}{V A}(\because V=R D)\)…
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