O-LevelPhysicsElectricity5054/11 · May/June 2011 · Q371 Mark
An alternating voltage of frequency 0.5 Hz is applied to the Y-plates of a cathode-ray oscilloscope (c.r.o.). The diagram shows the screen of the c.r.o. What is the time taken for the spot to cross the screen?
This question uses a diagram from the original paper, which isn't shown here. Open the full paper from the past papers archive to see it.
A3 s
B6 s
C15 s
D30 s
✓ Correct answer
A: 3 s
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