Final answer:
A solar cell converts light energy to electric energy, while a fuel cell converts chemical energy to electric energy.
Step-by-step explanation:
The device that changes light energy to electric energy is a solar cell. Solar cells are made of materials like silicon that absorb photons from sunlight and convert them into electrical energy using the photoelectric effect. This process is a direct energy transformation from solar to electrical energy.
On the other hand, the device that converts chemical energy to electric energy is referred to as a fuel cell. Fuel cells operate by allowing chemical reactions to take place, often involving hydrogen and oxygen, with the resultant flow of electrons creating an electric current.
In summary, for the photovoltaic cell mentioned in the question, the energy transformation that takes place is as follows:
- Solar energy transforms into electric energy.
Therefore, the correct answers are:
- a) Solar cell for the device that changes light energy to electric energy.
- b) Fuel cell for the device that converts chemical energy to electric energy.