Reading a Resistor's Color Code

Chapter: 3 — Breadboard Wiring and Electrical Fundamentals

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About This Poster

A close-up labeled view of a four-band axial resistor, showing which band encodes which part of its resistance value — the skill needed to read the current-limiting resistors used throughout this chapter.

How to Use

• Explore — hover or tap a numbered marker to read about that band.
• Quiz — test whether you can identify each band from a visual hint alone.
• Edit mode — open main.html?edit=true to drag markers and recalibrate positions once the poster image is generated.

Labeled Structures

1. Lead (Left)
2. Band 1 (First Digit)
3. Band 2 (Second Digit)
4. Band 3 (Multiplier)
5. Band 4 (Tolerance)
6. Lead (Right)