What is the resistance of a resistor with the color code blue-blue-grey-blue

To determine the resistance of a resistor with the color code blue-blue-grey-blue, we need to understand how to read the resistor color code. The resistor color code is a system of marking resistors with colored bands that indicate their resistance  resistor color code values, tolerances, and sometimes their temperature coefficients. Each color represents a specific number, and the order in which the colors appear on the resistor is important for determining the resistor’s value.

The colors used in the resistor color code chart are as follows:

Black: 0

Brown: 1

Red: 2

Orange: 3

Yellow: 4

Green: 5

Blue: 6

Violet: 7

Gray: 8

White: 9

Gold: ±5%

Silver: ±10%

The resistor color code for a four-band resistor is as follows:

• The first band represents the first significant digit of the resistance value.
• The second band represents the second significant digit of the resistance value.
• The third band represents the multiplier value.
• The fourth band represents the tolerance value.

Therefore, for a resistor with the color code blue-blue-grey-blue, we can determine the resistance value as follows:

• The first band is blue, which represents the digit 6.
• The second band is also blue, which represents the digit 6.
• The third band is grey, which represents a multiplier value of 100 (10^2).
• The fourth band is blue, which represents a tolerance of ±0.25%.

Using this information, we can calculate the resistance of the resistor by using the formula:

Resistance = (Digit 1 x 10 + Digit 2) x Multiplier

In this case, Digit 1 is 6 and Digit 2 is 6, and the multiplier is 100. Plugging these values into the formula, we get:

Resistance = (6 x 10 + 6) x 100

Resistance = 6600 ohms or 6.6 kilohms

Final words

Therefore, the resistance of the resistor with the color code blue-blue-grey-blue is 6.6 kilohms with a tolerance of ±0.25%. It is important to note that the tolerance value indicates the allowable variation in the resistance value, and in this case, the actual resistance Mad PCB  value of the resistor could be between 6.585 kilohms and 6.615 kilohms.