Question

When talking on a phone, the voice is transformed into electrical energy. This energy passes over wires or is transmitted through the air. Into what kind of energy does the speaker in the phone on the other end change the electrical energy?

Answer 1

It transferred from electrical to sound.

Answer 2

The speaker changes the electrical energy into sound energy.

Explanation: "Speakers in a phone convert electrical energy into sound energy, so it can be heard by the person speaking from the other phone."