A-LevelPhysicsElectricityMay/June 2022Paper 1 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?
AI = nqabc
BI = nqV / t
CI = nqbc / t
DI = nqaV
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The correct answer is B. This question tests the candidate's understanding of electricity within the Physicssyllabus. The examiner's mark scheme requires...
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