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4-Band Color Code for Resistors

​
band 1
Green
band 2
Gray
band 3
Orange
tolerance
Brown
Red
Gold
Silver
none
resistance = 58×
3
10
ohms, 10% tolerance
The color code for resistors is a standard way to specify the value of a resistance. There are four bands: the first and the second are digits of a number multiplied by the third that is a power of ten. The last band is the tolerance, which shows the precision of the value of the resistance.
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