Determine the nominal resistance and tolerance.

Here's the solution to the question:

a) Deduce the colour coded of this resistor.

Step 1: Determine the nominal resistance and tolerance.
For a four-band resistor, the resistance range is given by $R_{nominal} \pm \text{tolerance}$.
Let $R_{min} = 22 \, \text{k}\Omega$ and $R_{max} = 25.2 \, \text{k}\Omega$.
The nominal resistance ($R_{nominal}$) is the average of the minimum and maximum values:

$$R_{nominal} = \frac{R_{min} + R_{max}}{2}$$ $$$$