Answer: [tex]1.4\ \Omega[/tex]
Explanation:
Given
Cross-sectional area [tex]A=0.7\ mm^2[/tex]
Resistivity [tex]\rho =4.94\times 10^{-4}\ \Omega-mm[/tex]
Length of wire [tex]l=2\ m\ or\ 2000\ mm[/tex]
Resistance is given by
[tex]\Rightarrow R=\dfrac{\rho l}{A}\\\\\text{Insert values}\\\\\Rightarrow R=4.9\times 10^{-4}\times \dfrac{2000}{0.7}\\\\\Rightarrow R=1.4\ \Omega[/tex]
