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Homework Help: Circuits Potentiometer

  1. Mar 23, 2008 #1
    1. The problem statement, all variables and given/known data

    There's an 110V source and two resisters in series. The first resister, R, is a fixed resistor. The second resister, Rx, is a variable resister (a potentiometer). The potentiometer is to be designed to adjust current I from 1A to 10A. Calculate the values of R and Rx to achieve this.

    2. Relevant equations

    3. The attempt at a solution

    I have no clue where to start. I have never dealt with circuit problems that involved a potentiometer before.
  2. jcsd
  3. Mar 29, 2008 #2


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    The maximum current will flow trough the circuit when the potentiometer is at its minimum value and the minimum current when it is at its maximum value.
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