Power:

$\overline{){\mathbf{P}}{\mathbf{=}}{{\mathbf{i}}}^{{\mathbf{2}}}{\mathbf{R}}}$

Resistance can also be expressed as:

$\overline{){\mathbf{R}}{\mathbf{=}}\frac{\mathbf{4}\mathbf{\rho}\mathbf{l}}{\mathbf{\pi}{\mathbf{d}}^{\mathbf{2}}}}$

The resistivity of copper, ρ = 1.72 × 10^{-8} Ω•m

00-gauge copper wire has a diameter of 9.266 mm. Calculate the power loss in a kilometer of such wire when it carries 1.00x10^{2} A

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