The discussion focuses on measuring the electromotive force (emf) decline and the internal resistance of a test cell using a potentiometer and a resistor as a load. The user seeks to establish two balance points: one for emf measurement and another for calculating internal resistance while the cell is drained. The conversation emphasizes the importance of circuit diagrams and the relevant equations for accurate calculations of internal resistance.
PREREQUISITESElectrical engineers, researchers in electrochemistry, and students studying circuit analysis will benefit from this discussion, particularly those interested in measuring emf and internal resistance in battery testing scenarios.
williamkat said:Hello everyone, I am 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?