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Investigating the effect of resistance on a capacitor circuit.
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| Submitted: Thu Sep 25 2003
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Investigating the effect of resistance on a capacitor circuit Method: We will set up the following circuit. We will measure the capacitor pd. (Vc) with the cell connected. Then we will remove the cell and connect point A to point B, at the same moment starting a stopwatch. We will record the length of time (t) for the Vc to decay to 3.75 Volts. We intend to repeat this procedure using different resistors. Resistance (k?) Time (s) 33 33 68 72 100 97 150 153 330 320 680 584 Conclusion: From the graph we can clearly see that the time taken for the capacitor to discharge is directly proportional to the resistance. This is because the graph shows a definite straight line going through or near most of the points. This means that the higher resistor you use the longer it will take for the capacitor to discharge. The experiment has therefore proved the prediction correct i.e. the resistance should be directly proportionate to the time...
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