O-LevelPhysicsElectricity5054/12 · Oct/Nov 2018 · Q361 Mark
An oscilloscope is connected to a d.c. power supply. The time-base on the oscilloscope is switched off. What is seen on the screen of the oscilloscope?
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.
Adot in the center
Bdot slightly off-center
Cvertical line
Dhorizontal line
✓ Correct answer
A: dot in the center
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