A-LevelPhysicsD.C. circuits9702/12 · May/June 2018 · Q331 Mark

Which graph shows the variation of voltage V with current I for a semiconductor diode?

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.

AV-I graph showing sharp increase in V for positive I, and sharp decrease in V for negative I.

BV-I graph showing sharp increase in V for positive I (after a threshold), and V slightly negative and nearly constant for negative I.

CV-I graph showing sharp increase in V for negative I (after a threshold), and V slightly positive and nearly constant for positive I.

DV-I graph showing V positive and nearly constant for positive I, and V sharply decreasing for negative I (after a threshold).

✓ Correct answer

B: V-I graph showing sharp increase in V for positive I (after a threshold), and V slightly negative and nearly constant for negative I.

Oracle Prep sorts past-paper questions by topic, so you can drill D.C. circuits and see which topics are most likely to come up next.

Topic: D.C. circuits, A-Level Physics (syllabus 9702). Multiple choice, 1 mark.
Source: A-Level Physics, May/June 2018 Paper 1 Variant 2, question 33.

Questions and mark schemes are from past examination papers and remain the copyright of the exam board. How Oracle Prep builds its content