Which part (s) of a telephone involves the conversion of sound waves to electrical signals?

A.) both the speaker and the microphone

B.) the microphone

C.) neither the speaker nor the microphone

D.) the speaker

The correct answer is letter B. The microphone is the part of the telephone the converts sound waves into electrical signals that can be sent through the phone line and then towards the receiver on the other side. The telephone is one of the most important inventions made by man as it allowed communication to speed up through time.