Exam-style question
Try this first
What effect does increasing the separation between the plates of a parallel plate capacitor have on its capacitance?.
- A.Capacitance increases due to a stronger electric field.
- B.Capacitance decreases due to a weaker electric field.
- C.Capacitance remains unchanged.
- D.Capacitance increases due to increased charge storage.
Model answer
What a good answer should say
- Capacitance decreases due to a weaker electric field.
Explanation
Why this works
Increasing the separation between the plates of a parallel plate capacitor results in a decrease in capacitance. This is because a larger distance weakens the electric field between the plates, which reduces the ability of the capacitor to store charge at a given potential difference.
The key difference is that while plate area increases capacitance, increased separation has the opposite effect. Thus, the correct option correctly identifies the impact of plate separation on capacitance.
Common mistake
No common mistake is linked to this question yet.