Question

In the microphone, used in the public address system.

• A. Electric signals are first converted into sound waves
• B. Sound waves are directly transmitted
• C. Sound waves are converted into electric signals which are amplified and transmitted
• D. Amplification is not required

Answer 1

The correct option is C Sound waves are converted into electric signals which are amplified and transmitted

In the microphone, used in the public address system, Sound waves are converted into electric signals which are amplified and transmitted. Microphones are a type of transducer - a device which converts energy from one form to another. Microphones convert acoustical energy (sound waves) into electrical energy (the audio signal).