What device is a transducer that converts energy into sound?

What device is a transducer that converts energy into sound?

• A. Battery
• B. Buzzer
• C. Capacitor
• D. Conductor

Answer: (B)

A transducer that turns electrical energy into sound does so by converting energy from one form into audible vibrations. A buzzer fits this role perfectly: when it’s powered, it drives a vibrating element (such as a piezo disk or a small coil with a diaphragm) that creates pressure waves in the air, producing sound. The other items don’t perform this energy conversion to sound—batteries store and supply chemical energy, capacitors store electrical energy, and conductors simply transfer energy without generating sound. Some buzzers have an internal oscillator and can emit sound automatically, while others (passive buzzers) need an external signal to drive their vibration.

A transducer that turns electrical energy into sound does so by converting energy from one form into audible vibrations. A buzzer fits this role perfectly: when it’s powered, it drives a vibrating element (such as a piezo disk or a small coil with a diaphragm) that creates pressure waves in the air, producing sound. The other items don’t perform this energy conversion to sound—batteries store and supply chemical energy, capacitors store electrical energy, and conductors simply transfer energy without generating sound. Some buzzers have an internal oscillator and can emit sound automatically, while others (passive buzzers) need an external signal to drive their vibration.