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AP Physics 2
11.3 Resistance, Resistivity, and Ohm’s Law
IntermediateMCQGraphicalMathematicalConceptual18.9k
Resistance versus length for cylindrical wire samples of uniform cross-sectional area.
Resistance versus length for cylindrical wire samples of uniform cross-sectional area.
A student investigates the electrical properties of an unknown metal alloy. The student measures the electrical resistance of several cylindrical wire samples made of the alloy, each having a uniform cross-sectional area of \(2.5 \times 10^{-7} \text{ m}^2\) but different lengths. The measured resistance as a function of wire length is plotted below along with a best-fit line.

Based on the graph, what is the resistivity of the metal alloy?

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