A-LevelPhysicsPhysical quantities and units9702/12 · May/June 2015 · Q11 Mark

Which definition is correct and uses only quantities rather than units?

ADensity is mass per cubic metre.

BPotential difference is energy per unit current.

CPressure is force per unit area.

DSpeed is distance travelled per second.

✓ Correct answer

C: Pressure is force per unit area.

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Topic: Physical quantities and units, A-Level Physics (syllabus 9702). Multiple choice, 1 mark.
Source: A-Level Physics, May/June 2015 Paper 1 Variant 2, question 1.

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