How do I calculate Vo/Vs for a potentiometer circuit with varying resistance?

  • #1
tanky322
43
0

Homework Statement


In the circuit below, the wiper divides the potentiometer resistance between and, 0 . Find Vo / Vs

Schematic1.jpg

Homework Equations



KVL
KCL

The Attempt at a Solution



Im thinking that the Pot. Resistance will be R +(1-)R. Then to find the voltage (R +(1-)R)I
 

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  • #2
You can ignore the resistance of the main part of the pot to ground that is below the wiper because it is in parallel with a short circuit.
The resitance of the pot is simply, R - alphaR = R(1-alpha)
 
  • #3
So would the answer be:

((R)/I)Vs


Sorry about the formatting, I need to learn how to use the system.


Thanks


Andrew
 

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