Suppose the microphone on an AM radio is not working properly. Which best explains how this will affect the process of amplitude modulation?

A. The frequency of the carrier wave will be modified instead of the amplitude.

B. Sound waves will not be transformed into electrical signals.

C. Electrical signals will not be transformed into sound waves.

D. The pulse of the carrier wave will be modified instead of the amplitude.

Answer: The correct answer is B.

Explanation:

Amplitude modulation is the modulation in which the amplitude of the carrier wave is varied with the input signal but keeping the frequency of the carrier wave constant.

Microphone converts energy from one form to another. It converts sound energy into electrical signal. When a person speaks sound wave is created and voice is carried towards the microphone.

Suppose the microphone on an AM radio is not working properly. It means that the sound waves will not be transformed into electrical signals.

Therefore, the correct answer is B.

Answer: Sound waves will not be transformed into electrical signals.