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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 (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.