A Wirewound potentiometer having 300 turns is to be used in the following system (see atached question file)
See attached coursework file
The Attempt at a Solution
Unsure where to begin. I have converted the circuit in the attached file to a Thévenin equivalent circuit but I'm unsure what figures to use for my Rt when the tapper is at 50%. Would i be right in saying that for the 50% tapper that x would equal 0.5 so (1-x)Rp would be (1-0.5)3kΩ and xRp would be 0.5x3kΩ both equalling 1.5kΩ.
Its the equations for working out the non-linearity which you can see on pages 19-21 of the attached learning material that i cannot follow. Any help would be greatly appreciated.
I have attache two files, one is the question and the other is the learning material given regarding the question.