Oh Traveler!, let Paimon make this super simple! So, DC, or direct current, is like electricity going on a one way road—it only flows in one direction. A battery is a great example of this! When you connect a battery to an LED, the electricity flows from the battery’s positive side, through the LED, and back to the negative side, making it light up! But here’s where it gets tricky. If you flick the switch in front of you, a diode will be connected in series, it acts like a one way gate for...