Answer:
The resistance of the copper wire is 0.082 ohm
Explanation:
Given;
length of the wire, L = 2.0 m
diameter of the wire, d = 0.723 mm
radius of the wire, r = d / 2 = 0.3615 mm
resistivity of copper, ρ = 1.68 x 10⁻⁸ ohm m
The area of the copper wire is given by;
A = πr²
A = π (0.3615 x 10⁻³)²
A = 4.106 x 10⁻⁷ m²
The resistance of the copper wire is given by;
[tex]R = \frac{1.68 *10^{-8}* 2}{4.106*10^{-7}}\\\\ R = 0.082 \ ohms[/tex]
Therefore, the resistance of the copper wire is 0.082 ohm
