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Homework Help: Linear potentiometer in a circuit problem

  1. Nov 14, 2015 #1
    1. The problem statement, all variables and given/known data
    The total resistance for the linear potentiometer (R1) is 470 Ohms, and its length is 50mm. Calculate the distance x of the slider from the left edge of the potentiometer for which the output voltage (V out) is 0 V.

    2. Relevant equations
    Vout = Vin * (R1/(R2+R1))

    3. The attempt at a solution
    R3 and R2 are parallel: (150*330)/(150+330) = 103.125 Ohms
    (10)*(103.125) / [103.125+470(1-(x/50))] = 0V

    Attached Files:

  2. jcsd
  3. Nov 14, 2015 #2


    User Avatar

    Staff: Mentor

    No, R2 and R3 are not in parallel. R1 is in the way.
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