In the video, a person is using a multimeter to measure the voltage of a circuit. The circuit is connected to a breadboard, and a yellow wire is connected to one of the terminals. The person is holding the red probe of the multimeter in their hand and is touching the other terminal with the black probe. The multimeter's screen is visible, and it is showing a reading of 1.8 volts. The person's hand is steady, and they appear to be carefully measuring the voltage. The background is dark, and the focus is on the person's hand, the multimeter, and the circuit.