A-LevelPhysicsThermodynamicsOct/Nov 2013Paper 1 Q161 Mark
What is the internal energy of a system?
Athe amount of heat supplied to the system
Bthe random energy of the atoms of the system
Cthe total kinetic energy of the system
Dthe total potential energy of the system
✓ Correct Answer
The correct answer is B: the random energy of the atoms of the system
📋 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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