Answer :
Final answer:
Brian should use a buzzer to convert electric energy into sound energy for the alarm clock. A buzzer is designed for this specific purpose. Other options do not provide this conversion.
Explanation:
Choosing the Right Device for Sound Energy Conversion
In the scenario where Brian is repairing an old alarm clock, he needs a component that can convert electric energy into sound energy. Among the options provided:
- A. Battery - A battery stores electric energy but does not convert it into sound.
- B. Buzzer - A buzzer is specifically designed to convert electric energy into sound energy, making it the correct choice.
- C. Motor - An electric motor transforms electric energy into mechanical energy, not sound.
- D. Switch - A switch controls the flow of current but does not convert energy types.
Therefore, the best option for Brian to use is a buzzer.
Learn more about sound energy conversion here:
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