Physics And Measurement Question 95
Question: Dimensions of permeability are
[CBSE PMT 1991; AIIMS 2003]
Options:
A) $ {{A}^{-2}}M^{1}L^{1}{{T}^{-2}} $
B) $ ML{{T}^{-2}} $
C) $ ML^{0}{{T}^{-1}} $
D) $ {{A}^{-1}}MLT^{2} $
Show Answer
Answer:
Correct Answer: A
Solution:
$ F=\frac{{\mu _{0}}}{4\pi }\frac{2I _{1}I _{2}l}{r} $
$ \Rightarrow $ $ {\mu _{0}}=[F]{{[A]}^{-2}}=[ML{{T}^{-2}}{{A}^{-2}}] $
