A resistance of 600Ω has the color code given by 3 steps. The color of strips (from left to right) is given by
A resistance of 600Ω has the color code given by 3 steps. The color of strips (from left to right) is given by
The correct option is B blue, black & brown
Resistor Band Colors
As shown above, a carbon-composition resistor can have 4 to 6 bands. A 5-band resistor is more precise compared to a 4-band type because of the inclusion of a third significant digit. A 6-band resistor is like a 5-band resistor but includes a temperature coefficient band (the 6th band).
4-band 5-band 6-band 1st band 1st significant digit 1st significant digit 1st significant digit 2nd band 2nd significant digit 2nd significant digit 2nd significant digit 3rd band multiplier 3rd significant digit 3rd significant digit
4th band tolerance multiplier multiplier 5th band N/A tolerance tolerance 6th band N/A N/A temperature coefficient
Each color represents a number if it's located from the 1st to 2nd band for a 4-band type or 1st to 3rd band for a 5-band and 6-band type.
Color Value Black (2nd and 3rd bands only)
0 Brown 1 Red 2 Orange 3 Yellow 4 Green 5 Blue 6 Violet 7 Grey 8 White 9
Mnemonics were created to easily memorize the sequence of the colors. The most popular mnemonic is "Big Boys Race Our Young Girls But Violet Generally Wins" where the first letter of each word corresponds to the first letter of the color.
If the color is found on the 3rd band for a 4-band type or the 4th band for a 5-band and 6-band type, then it's a multiplier.
Color Value Black
x1 Brown x10 Red x100 Orange x1000 Yellow x10000 Green x100000 Blue x1000000 Violet x10000000 Grey x100000000 White x1000000000
Notice that the number of zeroes is equal to the color's number as per the previous table.
The fourth band (or 5th for the 5-band and 6-band) indicates the tolerance values. Here, two colors are added (gold and silver).
Color Value Black
N/A
Brown ±1% Red ±2% Orange ±3% Yellow ±4% Green ±0.5% Blue ±0.25% Violet ±0.10% Grey ±0.05% White N/A Gold ±5% Silver ±10%
The 6th band for a 6-band type resistor is the temperature coefficient. This indicates how much the actual resistance value of the resistor changes when the temperature changes.
Color Value Black
N/A Brown 100 ppm/ºC Red 50 ppm/ºC Orange 15 ppm/ºC Yellow 25 ppm/ºC Green N/A Blue 10 ppm/ºC Violet 5 ppm/ºC Grey N/A White N/A
Color Code Exceptions
5 Band Resistor with a 4th Band of Gold or Silver
Five band resistors with a fourth band of silver or gold form an exception, and are utilized on specific or older resistors. The first two bands represent the significant digits, the third band is a multiplication factor, the fourth band is for tolerance and the fifth band is for the temperature coefficient (ppm/K).
Resistor Band Colors
As shown above, a carbon-composition resistor can have 4 to 6 bands. A 5-band resistor is more precise compared to a 4-band type because of the inclusion of a third significant digit. A 6-band resistor is like a 5-band resistor but includes a temperature coefficient band (the 6th band).
| 4-band | 5-band | 6-band | |
|---|---|---|---|
| 1st band | 1st significant digit | 1st significant digit | 1st significant digit |
| 2nd band | 2nd significant digit | 2nd significant digit | 2nd significant digit |
| 3rd band | multiplier | 3rd significant digit | 3rd significant digit |
| 4th band | tolerance | multiplier | multiplier |
| 5th band | N/A | tolerance | tolerance |
| 6th band | N/A | N/A | temperature coefficient |
Each color represents a number if it's located from the 1st to 2nd band for a 4-band type or 1st to 3rd band for a 5-band and 6-band type.
| Color | Value |
|---|---|
Black (2nd and 3rd bands only) | 0 |
| Brown | 1 |
| Red | 2 |
| Orange | 3 |
| Yellow | 4 |
| Green | 5 |
| Blue | 6 |
| Violet | 7 |
| Grey | 8 |
| White | 9 |
Mnemonics were created to easily memorize the sequence of the colors. The most popular mnemonic is "Big Boys Race Our Young Girls But Violet Generally Wins" where the first letter of each word corresponds to the first letter of the color.
If the color is found on the 3rd band for a 4-band type or the 4th band for a 5-band and 6-band type, then it's a multiplier.
| Color | Value |
|---|---|
Black | x1 |
| Brown | x10 |
| Red | x100 |
| Orange | x1000 |
| Yellow | x10000 |
| Green | x100000 |
| Blue | x1000000 |
| Violet | x10000000 |
| Grey | x100000000 |
| White | x1000000000 |
Notice that the number of zeroes is equal to the color's number as per the previous table.
The fourth band (or 5th for the 5-band and 6-band) indicates the tolerance values. Here, two colors are added (gold and silver).
| Color | Value |
|---|---|
Black | N/A |
| Brown | ±1% |
| Red | ±2% |
| Orange | ±3% |
| Yellow | ±4% |
| Green | ±0.5% |
| Blue | ±0.25% |
| Violet | ±0.10% |
| Grey | ±0.05% |
| White | N/A |
| Gold | ±5% |
| Silver | ±10% |
The 6th band for a 6-band type resistor is the temperature coefficient. This indicates how much the actual resistance value of the resistor changes when the temperature changes.
| Color | Value |
|---|---|
Black | N/A |
| Brown | 100 ppm/ºC |
| Red | 50 ppm/ºC |
| Orange | 15 ppm/ºC |
| Yellow | 25 ppm/ºC |
| Green | N/A |
| Blue | 10 ppm/ºC |
| Violet | 5 ppm/ºC |
| Grey | N/A |
| White | N/A |
Color Code Exceptions
5 Band Resistor with a 4th Band of Gold or Silver
Five band resistors with a fourth band of silver or gold form an exception, and are utilized on specific or older resistors. The first two bands represent the significant digits, the third band is a multiplication factor, the fourth band is for tolerance and the fifth band is for the temperature coefficient (ppm/K).
