Red Black Black Gold — 20 Ω

Read left to right, starting from the end where the bands are grouped. The gold band is the tolerance and always sits alone at the far end.

What each band says

In a circuit

Surface-mount marking for the same value: 200.

If you misread one band

Brown and red, or orange and red, are easy to confuse under a desk lamp. These are the codes one band away from this one.

• Brown Black Black10 Ω
• Red Black Brown200 Ω
• Red Black Red2 kΩ
• Red Black Gold2 Ω
• Red Black Silver0.2 Ω
• Red Brown Black21 Ω
• Red Red Black22 Ω
• Red Orange Black23 Ω