A-LevelPhysicsPhysical quantities and unitsMay/June 2014Paper 1 Q11 Mark
The maximum theoretical power P of a wind turbine is given by the equation P = kpAvⁿ where ρ is the density of air, A is the area swept by the turbine blades, v is the speed of the air and k is a constant with no units. What is the value of n?
A1
B2
C3
D4
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The correct answer is C. This question tests the candidate's understanding of physical quantities and units within the Physicssyllabus. The examiner's mark scheme requires...
📋 Examiner Report & Trap Analysis
Common mistake: 62% of candidates selected the distractor because they confused... The examiner specifically designed this question to test whether students can differentiate between... To secure full marks, candidates must demonstrate...
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