What is the device that converts electrical signals to audible sounds called?

What is the device that converts electrical signals to audible sounds called?

• A. Speaker
• B. Microphone
• C. Amplifier
• D. Antenna

Answer: (A)

The device that turns electrical signals into audible sound is a speaker. It acts as a transducer that converts electrical energy into mechanical motion: the electrical audio signal drives a coil in a magnetic field, causing a lightweight diaphragm or cone to move back and forth. That motion pushes and pulls on the surrounding air, creating sound waves that you can hear. This is distinct from a microphone, which turns sound into electrical signals; an amplifier, which increases the signal’s power but doesn’t produce sound by itself; and an antenna, which radiates radio waves from electrical signals. So the speaker is the component that makes audible sound from an electrical audio signal.

The device that turns electrical signals into audible sound is a speaker. It acts as a transducer that converts electrical energy into mechanical motion: the electrical audio signal drives a coil in a magnetic field, causing a lightweight diaphragm or cone to move back and forth. That motion pushes and pulls on the surrounding air, creating sound waves that you can hear. This is distinct from a microphone, which turns sound into electrical signals; an amplifier, which increases the signal’s power but doesn’t produce sound by itself; and an antenna, which radiates radio waves from electrical signals. So the speaker is the component that makes audible sound from an electrical audio signal.