Resistors are one of the most commonly used components in electronic circuits. They are used to limit current, divide voltages, and terminate transmission lines. Resistors come in different shapes and sizes, but what distinguishes them from each other is their resistance value. The resistance value of a resistor is indicated by a set of color bands that are printed on its body. In this blog post, we will discuss the color code for a 1k ohm resistor.
What is the color code for a 1k ohm resistor?
A 1k ohm resistor has four color bands that indicate its resistance value. The first two bands represent the significant digits of the resistance value, the third band represents the multiplier, and the fourth band represents the tolerance.
The color code chart for resistors is as follows:
| Color | Significant Digit | Significant Digit | Multiplier | Tolerance |
|---|---|---|---|---|
| Black | 0 | 0 | 1 | – |
| Brown | 1 | 1 | 10 | ±1% |
| Red | 2 | 2 | 100 | ±2% |
| Orange | 3 | 3 | 1k | – |
| Yellow | 4 | 4 | 10k | – |
| Green | 5 |
To determine the resistance value of a 1k ohm resistor using its color code, follow these steps:
Step #1: Identify the first two significant digits
The first two bands on a resistor represent the significant digits of its resistance value. In our case, they are brown and black.
Brown represents “1” and black represents “0”. Therefore, our first two significant digits are “1” and “0”.
Step #2: Identify the multiplier
The third band on a resistor represents the multiplier. In our case, it is orange.
Orange represents “1k”. Therefore, our multiplier is “1000”.
Step #3: Calculate the resistance value
Now that we have identified all three components of our color code (brown-black-orange), we can calculate our resistance value using this formula:
Resistance Value = Significant Digits x Multiplier
Resistance Value = (1-0) x (1000)
Resistance Value = (10) x (1000)
Resistance Value = 10000 ohms or simply put as 10 kiloohms
Step #4: Identify tolerance
The fourth band on a resistor represents tolerance. In our case it’s gold which means that it has ±5% tolerance.
Conclusion
In summary, resistors play an important role in electronic circuits by limiting current flow and dividing voltage levels. A 1k ohm resistor has four colored bands that indicate its resistance value. By following these simple steps outlined above you can easily identify what is the color code for a 1k ohm resistor.