Exam-style question
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Define capacitance and explain how it is affected by the area of the plates and the separation between them.
Model answer
What a good answer should say
- Capacitance is defined as the charge stored per unit potential difference.
- It increases with larger plate area because more charge can be stored, and it decreases with greater separation between the plates due to reduced electric field strength.
Explanation
Why this works
This answer is strong because it clearly defines capacitance and describes the qualitative effects of plate area and separation on capacitance, which is the focus of the learning objective. It tests understanding of the relationship between physical dimensions of a capacitor and its ability to store charge.
Common mistake
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