A-LevelPhysicsAlternating currents9702/12 · Feb/Mar 2018 · Q61 Mark
A cathode-ray oscilloscope (c.r.o.) is connected to an alternating voltage. The following trace is produced on the screen. [Figure 6.1] The oscilloscope time-base setting is 0.5 ms cm⁻¹ and the Y-plate sensitivity is 2 V cm⁻¹. Which statement about the alternating voltage is correct?
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.
AThe amplitude is 3.5 cm.
BThe frequency is 0.5 kHz.
CThe period is 1 ms.
DThe wavelength is 4 cm.
✓ Correct answer
B: The frequency is 0.5 kHz.
Practise more questions on this topic
Oracle Prep sorts past-paper questions by topic, so you can drill Alternating currents and see which topics are most likely to come up next.
Sign up free →