What you'll learn
- Identify the long (anode +) and short (cathode −) leg of an LED.
- Calculate why a 220 Ω resistor protects a 5 mm LED.
- Use breadboard rows and rails to build a clean circuit.
What's in the kit
- 5 mm red LED
- 220 Ω resistor
- 9V battery + clip
- Half-size breadboard
- M-M jumper wires×2
Protocol: passive
