How to find Value of Resistor by Color Coding Resistor Color Coding Tutorial

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The value of Resistors is marked on the Resistors body by different color bands. Every color represents the value of a significant digit which is shown in the given Resistor Color Coding Table. Therefore we can calculate the value of Resistor by its colors coding using the below method. The complete explanation is also given in the given video “How to find Value of Resistor by Color Coding” so watch the video carefully and read the given method of Resistor Color Coding Tutorial. I hope that you will understand the complete procedure of How to find the value of Resistor by its color coding. If you have any query, feel free to ask by posting comments.

Resistor Color Coding Video Tutorial:


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Resistor colour code:

  • Black color code → 0
  • Brown color code →1
  • Red color code → 2
  • Orange color code → 3
  • Yellow color code → 4
  • Green color code → 5
  • Blue color code → 6
  • Violet color code → 7
  • Gray color code → 8
  • White color code → 9

Resistor Color Coding Table/ Resistor Color Coding Chart

Color First Band Second Band Third Band OR Multiplier Band Fourth Band OR Tolerance Band
Black 0 0 1 ±20%
Brown 1 1 10 ±1%
Red 2 2 100 ±2%
Orange 3 3 1000 ±3%
Yellow 4 4 10000 ±4%
Green 5 5 100000 ±0.5%
Blue 6 6 1000000 ±0.25%
Violet 7 7 10000000 ±0.10%
Gray 8 8 100000000 ±0.05%
White 9 9 1000000000
Gold ±5%
Silver ±10%
No Color ±20%

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FINDING THE VALUE OF A RERSISTOR BY COLOR CODES

To calculate the value of a resistor using the color coded bands on the resistor, use the following procedure.

Step One:

Turn the resistor so that the gold or silver stripe is at the right end of the resistor.

Step Two:

Look at the color of the first two stripes on the left end. These correspond to the first two digit of the resistor value. Use the table given below to determine the first two digits.

Step Three:

Look at the third stripe from the left. This corresponds to a multiplication value. Find the value using the table below.

Step Four:

Multiply the two digit number from step two by the number from step three.

This is the value of the Resistor in ohms. The fourth stripe indicates the accuracy of the resistor. A gold stripe means the value of the resistor may vary by 5% from the value given by the strips.

READING COLOR CODED RESISTANCE VALUES Example:

Example: For a 1000 Ω color coded Resistor,

READING COLOR CODED RESISTANCE VALUES Example

  • 1st color band = brown = 1
  • 2nd color band = black = 0
  • 3rd color band, multiplier = red = exponent 2
  • Last band, tolerance color band = gold
  • To calculate the resistance value: 1 0 x 10^2 = 10 x 100 = 1000 Ω
  • The 1 and 0 are the first two digits in the 1000 Ω value.
  • The 1 and the 0 don’t multiply or add. They are simply digits.

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