Voltage produced from light dislodging electrons from their orbits is called?

The phenomenon described in the question relates to the photoelectric effect, which occurs when light (photons) strikes a material and provides enough energy to dislodge electrons from their atoms. This process generates an electric current, as the free electrons can flow through a conductor. The energy from the absorbed light is converted into electrical energy, characterizing the term "photoelectric."

Regarding the other choices, a thermocouple refers to a device that generates voltage based on the temperature difference between two different conductors, which is unrelated to the photoelectric effect. The term "electromagnetic" refers more broadly to the waves produced by electric and magnetic fields, which does not specifically pertain to the process of light dislodging electrons. Thus, the correct answer specifically identifies the unique interaction between light and electrons, which is captured by the term "photoelectric."