Answer
The resistivity is $=13.8\times10^{-8}Ωm$
Work Step by Step
$A = π\times r^{2}$
$A = π\times (0.00654m)^{2}$
$Area = 1.344\times10^{-6}m^{2}$.
From Ohm's Law, the resistance is given by: $R = \frac{Voltage}{Current}$
Therefore, the resistance is $R = \frac{4.50 V}{17.6 A} = 0.256 Ω$.
The formula for resistivity is : ρ $ = \frac{ RA}{L}$
Therefore, the resitivity is $$ρ = \frac{ 1.344\times10^{-6}m^{2}\times0.256Ω}{2.50 m }$$
$$=13.8\times10^{-8}Ωm$$
