Question

The energy which directly changes to electric energy in a solar cell is :

• A. light energy only
• B. heat energy only
• C. both light and heat energy
• D. none of these

Answer 1

The correct option is A light energy only

Answer is A.

A solar cell is a small disk of a semiconductor like silicon. They are attached by wire to a circuit. As light strikes the semiconductor, causes electrons to flow and the light is converted into electricity that flows through the circuit. As soon as the light is removed, the solar cell stops producing power.
Hence, light energy is converted to electrical energy in a solar cell.