A-LevelPhysicsWork, energy and powerFeb/Mar 2018Paper 1 Q171 Mark

A small diesel engine uses a volume of 1.5 × 10⁴ cm³ of fuel per hour to produce a useful power output of 40 kW. It may be assumed that 34 kJ of energy is transferred to the engine when it uses 1.0 cm³ of fuel. What is the rate of transfer from the engine of energy that is wasted?

Q: What is the correct answer to this A-Level Physics question?

The correct answer is A: 102 kW.

Q: What topic does this question test?

This question tests Work, energy and power in A-Level Physics (syllabus code 9702). It is worth 1 mark.

A102 kW

B142 kW

C182 kW

D470 kW

✓ Correct Answer

The correct answer is A: 102 kW

📋 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...

🎯 Mark Scheme Breakdown

Award 1 mark for identifying the correct principle. Award 1 mark for showing clear working. Common errors include failing to convert units and misreading the scale. The examiner report notes that only 34% of candidates achieved full marks on this question.

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About This A-Level Physics Question

Topic

This multiple-choice question tests Work, energy and power in A-Level Physics (syllabus code 9702). It is worth 1 mark.

Source

This question appeared in the Cambridge A-Level Physics Feb/Mar 2018 examination, Paper 1 Variant 2.

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