Resistor

Req = Equivalent Resistance

In Series

Req = R1 + R2 + R3 + ...

In Parallel

1/Req = 1/R1 + 1/R2 + 1/R3 + ...

Black	Brown	Red	Orange	Yellow	Green	Blue	Violet	Grey	White
0	1	2	3	4	5	6	7	8	9

(ex. Brown Black Red = 1000 = 1KΩ)