A-LevelPhysicsElectricity9702/12 · May/June 2021 · Q321 Mark
A wedge-shaped metal conductor of length L, varying width and uniform thickness is connected to a cell, as shown. [Figure 32.1] Which graph best shows how the average drift velocity v of electrons in the conductor varies with distance x from end X?
This question uses a diagram from the original paper, which isn't shown here. Open the full paper from the past papers archive to see it.
AGraph A showing v decreasing non-linearly with x, with decreasing magnitude of gradient
BGraph B showing v increasing non-linearly with x, with increasing magnitude of gradient
CGraph C showing v decreasing linearly with x
DGraph D showing v increasing linearly with x
✓ Correct answer
A: Graph A showing v decreasing non-linearly with x, with decreasing magnitude of gradient
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