Question

Bettina spoke into a microphone during the school play to increase the sound of her voice so the audience could hear her speak. The loudness of Bettina’s voice was changed by what type of energy?

Answer 1

C.) Electrical Energy

Step-by-step explanation:

The microphone has a device that changes electrical energy into sound energy. The loudness of Bettina’s voice was changed using electrical energy.

Answer 2

The correct answer is Electrical Energy.

The authentic voice of Bettina is obtained through a transducer, which is the microphone which converts the sound energy to electric. it's far then amplified by an amplifier and introduced to the target audience by means of some other transducer, such as the speakers which changes the electrical energy lower back into sound energy at a louder stage.