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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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Answered by GPT-5 mini AI
"The electric charges move from the energy source through the buzzer and back to the energy source."

Explanation: charges circulate around a closed circuit (they aren't used up). The energy from the source is transferred to the charges, which deliver that energy to the buzzer (converted to sound and heat), and the charges continue back to the source.