GEOLOGY

EARTH SCIENCE

MAGNETISM

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which inventions transform sound energy into electrical energy?
A
Speaker
B
Headphones
C
Electric bell
D
Microphone
Explanation: 

Detailed explanation-1: -electromechanical transducer, any type of device that either converts an electrical signal into sound waves (as in a loudspeaker) or converts a sound wave into an electrical signal (as in the microphone).

Detailed explanation-2: -A loudspeaker converts sound energy to electrical energy.

Detailed explanation-3: -Hence, microphones convert sound energy into electrical energy.

Detailed explanation-4: -Example: Microphones convert acoustical energy (sound waves) into electrical energy (the audio signal).

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