Resistor Color Code Calculation For 4 Band, 5 Band, 6 Band, Ag, Ai

Resistor Color Code:

Isn’t finding the resistance value of a resistor an easy task? This free resistor color code calculator does all the calculations for you and gives you the final resistance value in seconds. Read Simple Steps to Read Resistance of Resistor, Resistor Color Code Chart, 4 Band Color Code and more. Also, get solved example questions on color code system of resistors.

Below are simple steps to read the color code of 4 band resistor, 5 band resistor and 6 band resistor.

  • First, identify all the colors in the resistors from left to right, and lastly the tolerances.
  • Use the color code chart and mark the digits for them.
  • The band before tolerance is the amplifier band.
  • Write the thode values ​​in a row to get the resistance.
  • The colored bars on the resistor indicate its value.

A resistor is the smallest device used in an electronic circuit.

The color code on each resistor has a value. Common color codes are 4 band resistor color code, 5 band resistor color code and 6 band resistor color code. The last color code is the tolerance and the last but one is the multiplier and the rest are called digits in the computer.

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Resistor color code formula:

The resistor color code formula is  4 Band resistor R (oh) in ohm is equal to the multiplier (digit 1*10  ) and addition digit 2 and add or minus tolerance.Hence the Resistor color code formula can be written as

R (oh)= multiplier * [( digit 1*10 ) +digit 2 ] ± tolerance

4 Band resistor color code has 2 digits, 1 multiplier and 1 tolerance

The formula to compute the resistance of 4band resistor is

R = multiplier * [( digit 1*10 ) +digit 2 ] ± tolerance

5 Band Resistor color code

The 5 Band resistor has 3 digits 1 multiplier and 1 tolerance at the end

The formula to find the resistance of 5 band system is

R = multiplier * [( digit 1*100) + (digit 2*10) +digit 3] ± tolerance

6 Band Resistor color code

It has 6 color. It is the same as the 5 band resistor but it has a temperature coefficient.The last one is the temperature coefficient

Example:1

Find the resistance of the resistor having the color sequence red,Brown,blue,slive?

Answer:

Red  band1=2

Orange band 2 =3

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Blue band3 = x1MΩ

Sliver  band4=± 10%

R= band 3 * [(band1 *10 ) + band 2] ± band 4

Rmax =100 * [(2*10 ) +3] Ω

R max = 100 * [(2 *10)+3 ] +2300 *2%Ω

Rmin = 100 * [(2 *10)+3 ] -2300 *2%Ω

Resistor value R =2300 Ω, 2% tolerance

2% tolerance means that resistor is in 2254.0 Ω,2346.0 Ω] range

Example:2

Find the resistance of the resistor having the color sequence yellow,violet,Gray,Blue?

Answer:

yellow  band1=2

Violet  band 2 =3

Gray band3 = x1MΩ

Blue  band4=± 10%

R= band 3 * [(band1 *10 ) + band 2] ± band 4

R =10000000* [(4*10 ) +7] Ω

R max = 10000000 * [(4*10)+7 ] +4700000000 *0.25%Ω

Rmin = 10000000 * [(4 *10)+7 ] -4700000000 *0.25%Ω

Resistor value R =4700000000 *0.25%Ω tolerance

0.25% tolerance means that resistor is in 4688250000 Ω,4711750000 Ω] range

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