What voltage is across a fully discharged capacitor?

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Multiple Choice

What voltage is across a fully discharged capacitor?

Explanation:
When a capacitor is fully discharged, there is no stored charge, so the voltage across its plates is zero. The relation V = Q/C means that with Q = 0, V = 0. In a DC circuit, a discharged capacitor initially behaves like a short circuit, allowing current to flow as it begins to charge, but the voltage across it starts at zero and rises as charge builds up toward the source voltage. The voltage across a capacitor cannot be three times the source in a simple circuit, and it isn’t negative the source unless the polarity is reversed or other circuit elements force it that way.

When a capacitor is fully discharged, there is no stored charge, so the voltage across its plates is zero. The relation V = Q/C means that with Q = 0, V = 0. In a DC circuit, a discharged capacitor initially behaves like a short circuit, allowing current to flow as it begins to charge, but the voltage across it starts at zero and rises as charge builds up toward the source voltage. The voltage across a capacitor cannot be three times the source in a simple circuit, and it isn’t negative the source unless the polarity is reversed or other circuit elements force it that way.

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