Answer:
ρ = 1.37x10⁻⁷ Ωm
Explanation:
The resistivity, ρ, of a wire is defined as:
ρ = R*A / L
Where R is resistance:
V / i= R
4.50V / 17.6A = 0.2557Ω
A is the area of the cross-section:
πR²
π* (0.654x10⁻³m)²
A = 1.344x10⁻⁶m²
And L is length of the wire:
L = 2.50m.
Replacing:
ρ = 0.2557Ω*1.344x10⁻⁶m² / 2.50m
