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Homework Statement
A Wirewound potentiometer having 300 turns is to be used in the following system (see atached question file)
Homework Equations
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 (1x)Rp would be (10.5)3kΩ and xRp would be 0.5x3kΩ both equalling 1.5kΩ.
Its the equations for working out the nonlinearity which you can see on pages 1921 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.
Attachments

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