Exam-style question
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In a capacitor, what is the relationship between charge (Q) and potential difference (V)?.
- A.Charge is directly proportional to potential difference.
- B.Charge is inversely proportional to potential difference.
- C.Charge is independent of potential difference.
- D.Charge is equal to potential difference.
Model answer
What a good answer should say
- Charge is directly proportional to potential difference.
Explanation
Why this works
The relationship between charge (Q) and potential difference (V) in a capacitor is defined by the equation Q = CV, where C is the capacitance. This indicates that charge is directly proportional to potential difference; as the potential difference increases, the charge stored in the capacitor also increases.
The key difference is that this proportionality is governed by the capacitance value, which remains constant for a given capacitor. Therefore, the correct option accurately describes this fundamental relationship.
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