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Answer :
Final answer:
Brian should use a motor to replace the device in his alarm clock since it converts electrical energy into mechanical energy, essential for the clock's operation. Other options like batteries and buzzers do not fulfill this function. Thus, the correct choice is a motor.
Explanation:
Understanding the Component Needed for Alarm Clock Repair
In the context of repairing an old alarm clock, Brian needs a device that can convert electrical energy into mechanical energy or sound. The correct option from the choices available would be the motor.
Here's a brief breakdown of the options:
- A. battery - A battery stores electrical energy but does not convert it into motion or sound.
- B. buzzer - A buzzer converts electrical energy into sound, but it does not convey mechanical movement for keeping time.
- C. motor - A motor is specifically designed to convert electrical energy into mechanical energy, making it the right choice for an alarm clock that needs to operate mechanisms like gears or dials.
- D. switch - A switch controls the flow of electricity but does not convert energy.
Therefore, in the context of this question, the most appropriate component for Brian’s repair work is a motor, as it enables the mechanical movement necessary for the clock's functions.
Learn more about energy conversion here:
https://brainly.com/question/44102743
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