Q. The dimensional formula of electrical conductivity is
A) $\lbrack M^{- 1}L^{- 3}T^{3}A^{2}\rbrack$
B) ${\lbrack ML}^{3}T^{3}A^{2}\rbrack$
C) ${\lbrack M^{2}L}^{3}T^{- 3}A^{2}\rbrack$
D) ${\lbrack ML}^{3}T^{3}A^{- 2}\rbrack$
Explanation
Conductivity $\left( \frac{1}{\rho} \right) = \frac{1}{aR} = \frac{\lbrack L\rbrack}{\left\lbrack L^{2} \right\rbrack\lbrack ML^{2}T^{- 3}A^{- 2}\rbrack}$ $= \lbrack M^{- 1}L^{- 3}T^{3}A^{2}\rbrack$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.