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Physics · Oct / Nov 2022 · Paper 11 · Question 34

5054The a.c. generator

The diagram shows the output from an a.c. generator displayed on an oscilloscope screen. The generator is turned at a slower rate. The settings on the oscilloscope controls are not changed. Which diagram shows the new output?

  1. ADiagram A: sine wave with larger amplitude and same frequency as original
  2. BDiagram B: sine wave with smaller amplitude and lower frequency
  3. CDiagram C: sine wave with same amplitude and lower frequency
  4. DDiagram D: sine wave with same amplitude and higher frequency

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Correct answer: B. Diagram B: sine wave with smaller amplitude and lower frequency

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