Exam-style question
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How does increasing the plate area of a parallel plate capacitor affect its capacitance?.
- A.It decreases the capacitance due to increased distance between plates.
- B.It increases the capacitance by allowing more charge to be stored.
- C.It has no effect on the capacitance.
- D.It increases the capacitance by increasing the potential difference.
Model answer
What a good answer should say
- It increases the capacitance by allowing more charge to be stored.
Explanation
Why this works
Increasing the plate area of a parallel plate capacitor increases the capacitance because a larger area allows more charge to be stored at a given potential difference. The mechanism involves the increased surface area providing more space for charge accumulation, leading to a higher capacitance.
The consequence is that the capacitor can store more energy, enhancing its performance in electrical circuits.
Common mistake
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