The principle of a capacitor is based on which of the following facts?
Correct answer: D. The potential of a conductor increases as the charge on it increases.
- A. The potential of a conductor increases when the charge on it decreases, but this affects the charge stored in it.
- B. The potential of a conductor is greatly reduced when the charge on it increases.
- C. The potential of a conductor increases without affecting the charge stored in it.
- D. The potential of a conductor increases as the charge on it increases.
Explanation
A capacitor stores charge by maintaining a potential difference between two conductors. The basic relation for any conductor is: V (directly proportional) Q meaning the potential (V) of a conductor increases when the charge (Q) on it increases. This direct relationship forms the fundamental principle of capacitance: C = Q/V Thus, option D correctly states the essential fact on which capacitors operate.
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