check the link : https://youtu.be/yQYN3Nzqjpk
By using the colour code
🔹 Resistor Colour Code
A resistor usually has 4 colour bands:( 5 band also present)
| Band | Meaning |
|---|---|
| 1st band | First digit |
| 2nd band | Second digit |
| 3rd band | Multiplier |
| 4th band | Tolerance |
Colour → Number Table
| Colour | Number |
|---|---|
| Black | 0 |
| Brown | 1 |
| Red | 2 |
| Orange | 3 |
| Yellow | 4 |
| Green | 5 |
| Blue | 6 |
| Violet | 7 |
| Grey | 8 |
| White | 9 |
Example
Resistor bands: Orange – Orange – Brown – Gold
-
Orange = 3
-
Orange = 3
-
Brown = ×10
-
Gold = ±5%
silver = ±10%
No band = ±20%
Value = 33 × 10 = 330Ω (±5%)
 |
| Note: The band numbering is from left to right of resistor, you can seen the area were band's are crowded is the left side |