Green light is converted into what?

• A. Current
• B. Light
• C. Voltage
• D. Heat

Answer: (C)

Light energy hitting a photovoltaic device is transformed into electrical energy. When green light shines on a solar cell or photodiode, photons create charge carriers, and the device’s built‑in electric field separates them, establishing a potential difference. That potential difference is voltage. The current would flow if the circuit is closed, but the key observable conversion from light here is the generation of electrical energy, represented by voltage across the device. Heat is only a byproduct of imperfect efficiency, not the primary conversion.