“What happens when there is an unintentional drop in electric voltage in a power supply system?”
What roads were to Rome the electric grid is to modern civilization. Like a heart pumping blood to the rest of the body, the grid ensures that every component receives enough vital supplies. But sometimes, there is not enough voltage to go around, and as a result components will need to take a drop in voltage. This phenomenon is known as a brownout, and can lead to unexpected results like all of the lights in the city dimming down or space heaters losing their practical functionality.