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When an electric circuit operates, a buzzer makes a sound. What happens to the electric charges in this circuit?
The electric charges move from the energy source and are used up at the switch.
The electric charges move from the energy source and are used up at the buzzer.
The electric charges move from the buzzer through the energy source and back to the buzzer.
The electric charges move from the energy source through the buzzer and back to the energy source.
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The electric charges move from the energy source through the buzzer and back to the energy source.
Explanation: Charges flow in a closed circuit; the source supplies energy to the charges, which transfer that energy to the buzzer (making it sound), but the charges themselves are not used up — they keep circulating.
Explanation: Charges flow in a closed circuit; the source supplies energy to the charges, which transfer that energy to the buzzer (making it sound), but the charges themselves are not used up — they keep circulating.
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