Ohm's Law: Color Code

Here is a chart of the Ohm's Law color code system. Right now ill be telling you how to calculate a 220 ohm resistor.

So the 220 ohm resistor color pattern is red red brown gold.

The first and second pattern colors (the two red's) are digits. They're value's are 2 so they make 22
because 2 and 2 are put beside each other not added or multiplied.

The third pattern is a multiplier so it takes the two or three digits and multiplies it by 1---- and its color's value shows how many 0's are after the 1. But the resistor we are looking at is the 220 ohm resistor so its color is brown. Brown's value is 10-1 which equals x10

(Note) Think of the 10 in the multiplier as just a 1 and the numbers on the sheet are the amount of 0's you put after the 1

The forth and final pattern on the 220 ohm resistor is tolerance indicator. They show that there is a number between the increased and decreased percentage of ohm's. On the 220 ohm resistor it is gold which is 5%. Which means the number of ohm's we have is somewhere between a 5% increase and decrease.

(Example) 22 x 10 = 220    220 +/- 5% = 231 high
                                                                         so our amount of ohm's is between the high and the low
                                                               = 209 low