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The experiment involves the determination, of the internal resistance of a cell.
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Use of a Potentiometer in Determining the Resistance of a Cell 29/01/00. Introduction The experiment involves the determination, of the internal resistance of a cell. It is known that the internal resistance (r), of a cell (Eo) in a potentiometer circuit as shown below can be found using the formula: r = R( ( lo/l) -1) Where R is the resistance of the resister in parrallel with the cell Eo. In this experiment the same galvanometer, driver cell jockey and potentiometer wire were used throughout. This was done to ensure that the experiment was kept as fair as possible and was not biased due to misreadings resulting from changing the apparatus. Also during the experiment a variable resister was used to make sure the same current flowed through the potentiometer. Whilst the experiment was being conducted. So that the voltage gradient (k) across the wire was kept constant during the experiment, as if...
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