The Effect of Temperature on the Resistance of a Metal Wire
How does different temperatures affect the resistance of a metal
wire/thermistor.
Aim (preliminary):
The preliminary aim of my coursework was to measure what affect
different temperatures have on the change in resistance of a copper
wire.
Apparatus:
* Distilled water
* Heat proof mat
* Tri pod
* Bunsen burner
* Copper wire
* 5v power pack
* Electrical wires
* Crocodile clips
* Thermometer
* 100W resistor
Diagram:
Resistor
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HEAT
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In theory this was a good experiment however in practice it was not.
Whilst conducting the experiment I realise that from the temperature
changing from 0 degrees to 100 degrees there was only a small change
of 0.01v. I tried with a different resistor but still had no luck.
There was not enough change for me to conduct a worthwhile experiment.
I tried to use a higher current on the power pack but still the
voltage never changed of the copper wire and as a higher current was
used I ad to press the reset button as the power pack continued to
reset. Therefore I concluded that using copper wire to conduct this
experiment was not appropriate as it’s resistively was too high to be
affected by small or even large changes in temperature.
Instead of using a metal I decided to use a thermistor as it can be
subjected to different temperatures and I can expect some results
Aim:
The aim of my investigation is to see whether the resistance of a
thermistor (a type of temperature sensitive resistor) is directly
proportional to the temperature. I'm anticipating that this
experiment will be interesting and relatively challenging because a
thermistor is a type of resistors whose resistance changes
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