Previous Year Question
Solar energy is converted into electric energy through
Photo voltaic cells
Leclanché cells
Voltaic cells
Voltaic cells
Correct Answer: A
Detailed Solution
A Photovoltaic (PV) Cell, commonly called a Solar Cell, converts sunlight directly into electrical energy. This process is known as the Photovoltaic Effect.
A PV Cell is generally made of a Semiconductor material, particularly Silicon. When photons from sunlight strike the semiconductor, sufficient photon energy can release electrons and produce electron-hole pairs.
The internal electric field in a Solar Cell causes electrons and holes to move in opposite directions. When an external circuit is connected, this directed flow of electrons produces an Electric Current.
The fundamental energy conversion is:
Solar/Light Energy → Electrical Energy