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    Resistor

                         A resistor is an  electrical  component  that  resists  the  flow  of  current  in  a  circuit.
                         Resistance is measured in ohms (Ω).

                         It is used to control the amount of current that flows through an LED to prevent it from
                         burning out/damaging.

                         The value of a resistor is identified by the color coding. Colored bands are painted on
                         the resistor, and each color represents a number which define the resistor value.

                      Resistor Color Code

                      Resistors often have coloured bands to indicate their resistance value, multiplier, and tolerance.
                      Here’s a breakdown of the process:

                                                                 Color coding table

                      Example: How to calculate resistor value?

                      Step 1  Look at the resistor and refer to the table and note down the
                               color band numbers.
                      Step 2  For the first band, if it’s red, write down the number 2. Repeat
                               this for the second band.

                      Step 3  Write down the numbers from the first and second bands together, like 22 (as shown in the
                               image).

                      Step 4  The third band’s color is orange, which acts as a multiplier. Look at the table to find that
                               orange represents 10^3. Multiply 22 by 10^3 to get 22000.
                      Step 5  Add the unit of resistance, ohms (Ω), after 22000.

                           14    RoboGenius (V1.0)-VII

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