What happens during photoconduction in a conductor?

• A. The material heats up
• B. It becomes a better conductor
• C. It becomes a worse conductor
• D. It emits photons

Answer: (B)

During photoconduction in a conductor, the material absorbs photons, typically from light sources. This absorption of energy raises electrons to higher energy states, increasing their mobility within the conductor. As a result, the material allows electric current to flow more freely, effectively making it a better conductor. This process is essential in various applications, such as photodetectors and photovoltaic cells, where light energy is converted into electrical energy. The enhanced conductivity is a direct consequence of the increased number of charge carriers available after the absorption of light, which facilitates a more efficient conduction process.