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AP Physics 2
11.1 Electric Current
BeginnerMCQProportional AnalysisConceptual13.8k
Electrons drifting through a segment of copper wire.
Electrons drifting through a segment of copper wire.
Free electrons inside a copper wire drift to the left with a constant average speed \(v_d\), as shown in the diagram. Which of the following correctly identifies the direction of the conventional current in the wire and describes how the magnitude of the electric current \(I\) depends on the cross-sectional area \(A\) of the wire, assuming \(v_d\) and the charge carrier density remain constant?

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