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An Investigation into the Resistance of a Thermistor
Member rating: No Rating | Words: | Submitted: Thu Feb 03 2005
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An Investigation into the Resistance of a Thermistor Aim: Our aim is to investigate the temperature dependence of a thermistor, by heating it and measuring the current passing through it. We will collect three different pieces of data throughout the experiment, current, voltage and temperature. From this we will work out the resistance. Hypothesis: I predict that as we heat up the thermistor more current will pass through it. However the resistance of the circuit depends on the type of thermistor that we used (NTC or PTC). From looking ahead at the results our resistance decreased so this is a clear indication that we were using a Negative Temperature Coefficient thermal resistor and not a PTC, which would have increased resistance. So I predict that as heat enters the thermistor the electrons subsequently can move around and become free, the current will then increase as the electrons flow around the circuit and the resistance...
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