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Linear potentiometer in a circuit problem

  • #1
30
1

Homework Statement


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.

Homework Equations


Vout = Vin * (R1/(R2+R1))

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
 

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Answers and Replies

  • #2
gneill
Mentor
20,733
2,730
No, R2 and R3 are not in parallel. R1 is in the way.
 

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