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AP Physics 2
11.4 Electric Power
11.3 Resistance, Resistivity, and Ohm’s Law
IntermediateMCQGraphicalConceptual25.5k
Graph of potential difference \(\Delta V\) versus current \(I\) for the metal wire.
Graph of potential difference \(\Delta V\) versus current \(I\) for the metal wire.
A student investigates the electrical properties of a thin cylindrical metal wire of fixed length and cross-sectional area. The student measures the potential difference \(\Delta V\) across the wire for various values of the current \(I\) and generates the graph shown. As the current increases, the graph curves upward with an increasing slope. Which of the following statements correctly interprets the graph in terms of the wire's resistance and physical properties?

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