Given the symbol $○-$, which component in a circuit does it represent?

• A. A resistor
• B. A battery
• C. A capacitor
• D. A negative electric charge

Answer: (D)

Verified step by step guidance

1. Identify the symbol given: a circle with a minus sign inside it (\( \bigcirc - \)).
2. Recall common circuit symbols: a resistor is usually a zigzag line, a battery is represented by a pair of long and short parallel lines, and a capacitor is shown as two parallel lines.
3. Understand that the symbol \( \bigcirc - \) is not a standard circuit component symbol but rather represents a negative electric charge or a negative terminal in some contexts.
4. Conclude that this symbol does not correspond to resistor, battery, or capacitor, but instead indicates a negative electric charge.
5. Therefore, the symbol \( \bigcirc - \) represents a negative electric charge, not a circuit component.