Which department is responsible for generating light on a film set?

The correct choice is the Electrical department, which is primarily responsible for generating and managing light on a film set. This department handles the setup and operation of lighting equipment, ensuring the director of photography's vision is realized through appropriate lighting schemes. The Electrical team works closely with the cinematographer to determine the necessary lighting conditions for each scene, employing various types of lights, including spotlights, floods, and various specialty fixtures.

While both the Cinematography and Grip departments play important roles in lighting as well—Cinematography focuses on capturing images and visual storytelling through camera work and lens choices, and Grip provides the physical support for lighting and camera equipment by helping to manipulate light and create shadows—the direct responsibility for generating and managing electricity and lighting fixtures falls to the Electrical department. Production Design, on the other hand, is concerned with the overall visual appearance of the film set, setting the aesthetic and style, but does not focus specifically on the lighting itself.