The video shows a whiteboard with two diagrams drawn on it. The diagrams depict a circuit with a battery, a switch, and a light bulb. The person in the video points to different parts of the circuit, explaining how the switch controls the flow of electricity. The person uses a black marker to draw lines and labels on the whiteboard, emphasizing the flow of electricity when the switch is turned on and off. The video is shot from a close-up angle, focusing on the whiteboard and the person's hand movements.