O-LevelPhysicsElectricityOct/Nov 2023Paper 1 Q381 Mark
The diagram shows the trace produced on the screen of an oscilloscope due to an alternating voltage input. The time-base on the oscilloscope is set to 4 ms/cm. What does the trace look like when the time base is set to 2 ms/cm?
AOscilloscope trace A (showing 3 full cycles within the same width as the original)
BOscilloscope trace B (showing 1.5 full cycles within the same width as the original)
COscilloscope trace C (showing 4 full cycles within the same width as the original)
DOscilloscope trace D (showing 2 full cycles within the same width as the original)
✓ Correct Answer
The correct answer is C. This question tests the candidate's understanding of electricity 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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