A-LevelPhysicsWork, energy and powerOct/Nov 2014Paper 1 Q151 Mark
A small electric motor is mounted on a bench, as shown. The motor is connected to a 6.0V supply and the current in the motor is 0.50A. The motor is 50% efficient. [Figure 15.1] What is the time taken to lift a mass of 200 g up through a height of 90 cm?
A0.59 s
B0.85 s
C1.2 s
D2.7 s
✓ Correct Answer
The correct answer is C. This question tests the candidate's understanding of work, energy and power within the Physicssyllabus. The examiner's mark scheme requires...
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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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