Resistance:

$\overline{){\mathbf{R}}{\mathbf{=}}{\mathbf{\rho}}\frac{\mathbf{l}}{\mathbf{A}}}$ where ρ is the resistivity, l is the length, and A is the cross-sectional area.

A = πr^{2}

Pencil "lead" is actually carbon. What is the resistance of the 0.760 mm-diameter, 7.00cm-long lead from a mechanical pencil?

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