A-LevelPhysicsElectricity9702/12 · May/June 2022 · Q311 Mark

The diagram shows a metal block. [Figure 31.1] The block has sides of length a, b and c as shown, and its volume is V. Each charge carrier has a charge –q and the number density of the charge carriers in the metal is n. It takes each charge carrier an average time of t to pass through the block. What is an expression for the current I?

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.

AI = nqabc

BI = nqV / t

CI = nqbc / t

DI = nqaV

✓ Correct answer

B: I = nqV / t

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

Topic: Electricity, A-Level Physics (syllabus 9702). Multiple choice, 1 mark.
Source: A-Level Physics, May/June 2022 Paper 1 Variant 2, question 31.

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