Final answer:
PV energy conversion transforms the sun's light directly into electricity through the use of photovoltaic cells utilizing the photoelectric effect.
Step-by-step explanation:
Photovoltaic or PV energy conversion directly converts the sun's light into electricity. In a photovoltaic cell, this occurs through the photoelectric effect, where light impinging on the cell, typically composed of semiconducting material, releases electrons that can be captured to produce an electric current. Solar cells can convert the energy from sunlight into electrical energy, which can then be used for various electric processes, including to run an electric motor and convert the electrical energy into mechanical energy.