Physics And Measurement Question 70
Question: The dimensions of resistivity in terms of $ M,L,T $ and $ Q $ where $ Q $ stands for the dimensions of charge, is
[MP PET 1993]
Options:
A) $ ML^{3}{{T}^{-1}}{{Q}^{-2}} $
B) $ ML^{3}{{T}^{-2}}{{Q}^{-1}} $
C) $ ML^{2}{{T}^{-1}}{{Q}^{-1}} $
D) $ ML{{T}^{-1}}{{Q}^{-1}} $
Show Answer
Answer:
Correct Answer: A
Solution:
$ \rho =\frac{RA}{l} $ i.e. dimension of resistivity is $ [ML^{3}{{T}^{-1}}{{Q}^{-2}}] $
