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AP Physics 2
11.3 Resistance, Resistivity, and Ohm’s Law
11.2 Simple Circuits
IntermediateMCQGraphicalConceptual17.9k
Schematics of Element 1 and Element 2.
Schematics of Element 1 and Element 2.
A student investigates the current-versus-potential-difference characteristics of two circuit elements. Element 1 consists of a single ohmic resistor of resistance \(R_0\). Element 2 consists of the same ohmic resistor \(R_0\) connected in series with an ideal diode that permits current in only one direction (zero resistance when \(\Delta V > 0\) and infinite resistance when \(\Delta V < 0\)). Which of the following graphs best represents the current \(I\) through Element 2 as a function of the potential difference \(\Delta V\) applied across it (solid line), compared to the current through Element 1 (dashed line)?

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