Exam-style question
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How does the area of the plates in a parallel plate capacitor affect its capacitance?.
- A.Increasing the area increases capacitance due to more charge storage.
- B.Increasing the area decreases capacitance due to increased distance.
- C.The area of the plates has no effect on capacitance.
- D.Capacitance is only affected by the separation of the plates.
Model answer
What a good answer should say
- Increasing the area increases capacitance due to more charge storage.
Explanation
Why this works
The capacitance of a parallel plate capacitor is directly proportional to the area of the plates. This means that increasing the plate area allows for more charge to be stored at a given potential difference, thus increasing capacitance.
The key difference here is that while the area increases the ability to store charge, the separation of the plates affects the electric field strength. Therefore, the correct option accurately describes the relationship between plate area and capacitance.
Common mistake
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