Exam-style question
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When does a capacitor store maximum charge?.
- A.When the potential difference is zero
- B.When the potential difference is at its maximum
- C.When the capacitance is zero
- D.When the circuit is open
Model answer
What a good answer should say
- When the potential difference is at its maximum
Explanation
Why this works
A capacitor stores maximum charge when the potential difference across its plates is at its maximum. This is because the charge stored is directly proportional to the potential difference, as per the definition of capacitance.
Common mistake
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