WHAT KIND OF ENERGY TRANSFORMATION TAKES PLACE IN THE FOLLOWING DEVICES

microphone

headphone

solar battery

photoelectric cell

electric cell

1.A microphone converts sound energy(of our voice) into electrical energy.

2.batteries use chemical potential energy to make electricity. electrical energy is converted into light/electromagnetic energy by the screen, and sound energy by the headphones.

3.A solar cell converts sunlight directly into electricity by the photovoltaic effect. 

4. Photovoltaic effect (electrical charge generated in certain substances when exposed to light)

5.Chemical energy is transformed to electrical energy.