Resistance
Color Chart
Reference
Charts
Color
Value
Multiplier
Tolerance
Black
0
1
Brown
1
10
±1 %
Red
2
100
±2 %
Series Resistance Math:
R
T
= R
1
+ R
2
+ R
3
Parallel Resistance Math:
1/R
T
= 1/R
1
+ 1/R
2
+ 1/R
3
Orange
3
1,000
±3 %
Yellow
4
10,000
±4 %
Green
5
100,000
Blue
6
1,000,000
Violet
7
10,000,000
Grey
8
100,000,000
White
9
Gold
0.1
Silver
0.01
±10 %
none
±20 %
P = Power
(Watts)
I = Current
(Amperes)
R = Resistance
(Ohms)
E = Voltage
(Volts)
Z = Impedance
(Ohms)
( For AC circuits, substitute
Z
for
R
)
Resistors in Series
Created and Maintained by:
Mark Davis
(Braille version not available . . .)
—
©
— Mark Davis - Endless Productions, 1997-2013