Exam-style question
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What effect does increasing damping have on the amplitude of a resonating system? Scenario focus: use circular motion in a distinct A-Level Physics context and identify the relevant physical quantity before choosing the answer.
- A.Increases the amplitude
- B.Decreases the amplitude
- C.Has no effect on the amplitude
- D.Increases the frequency
Model answer
What a good answer should say
- Decreases the amplitude
Explanation
Why this works
The correct answer is Decreases the amplitude. This option is correct for Periodic motion because it applies the circular motion idea in the stem and keeps the relevant quantity, unit, and physical conclusion together.
The alternatives either use a neighbouring formula, omit a required variable, or describe a different physical situation.
Common mistake
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