Q. $\lbrack ML^{2}T^{- 3}A^{- 2}\rbrack$ is the dimensional formula of
A) Electric resistance
B) Capacity
C) Electric potential
D) Specific resistance
Explanation
Electric potential $V = IR,\lbrack R\rbrack = \left\lbrack \frac{V}{I} \right\rbrack = \left\lbrack \frac{Work\ done}{Charge\ \times I} \right\rbrack$ $= \frac{\lbrack ML^{2}T^{- 2}\rbrack}{\lbrack A^{2}T\rbrack} = \lbrack ML^{2}T^{- 3}A^{- 2}\rbrack$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.