Resistor Color Coding & Multimeter

In the previous lesson, we learned about LEDs and resistors and built our first LED circuit.

In this lesson, we will learn two very useful skills:

• 🟫 How to identify a resistor's value using its color bands
• 🔧 How to use a multimeter to measure and test electronic components

By the end of this lesson, you should be able to identify common resistor values and perform basic measurements using a multimeter.

Small resistors usually don't have enough space to print their resistance value as a number.

Instead, colored bands are printed around the resistor.

Each color represents a number.

For example:

     ┌─────────────────┐
─────│ 🟫 🟥 🟨 🟨     │─────
     └─────────────────┘
       ↑  ↑  ↑  ↑
       │  │  │  └── Tolerance
       │  │  └───── Multiplier
       │  └──────── Second digit
       └─────────── First digit

By reading these colors, we can determine the resistance value.

Multimeter is a measurement tool used to measure different electrical quantities.

A digital multimeter may allow you to measure:

Voltage
Resistance
Current
Continuity

In this lesson, you learned how to:

• Understand resistor color codes
• Understand resistor tolerance
• Identify common resistor values
• Use a digital multimeter
• Measure DC voltage
• Measure resistance
• Test continuity
• Test a switch
• Perform a basic LED diode test
• 
  

These are some of the most useful basic skills in electronics.