Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Rate of emf decline and rate of change of internal resistance

  1. Mar 4, 2012 #1
    Hello everyone, im trying to work on this topic as my research. i plan on using a potentiometer but i want to be able to use the resistor (across the test cell) as the load and still be able to obtain two balance points. one for emf, and another for calculating internal resistance as the cell is being drained by the resistor. any help please?
  2. jcsd
  3. Mar 4, 2012 #2


    User Avatar

    Staff: Mentor

    Welcome to the PF.

    Can you please post a circuit diagram of your setup? What equations are you going to use to calculate the internal resistance of your voltage supply?
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook