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Find out the resistance of different wires at different lengths when the SWG is kept the same.
Member rating: No Rating | Words: | Submitted: Thu Feb 19 2004
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Investigating Resistance Aim The aim of the experiment is to find out the resistance of different wires at different lengths when the SWG is kept the same. Plan Setup up the experiment as shown above. The wire should be placed in a trough immersed in water to keep it at a constant temperature. Starting with Eureka 24 SWG, measure 50cm accurately using a metre ruler. Then connect a wire at each end using crocodile clips and place in the trough. Make sure that the wire is not touching as this will give a short circuit. Set the power pack to 12v and turn it on. Adjust the variable resistor so that when the wire is at full length, the reading on the ammeter will be 1.5A. It should not be altered after that at all for the rest of the experiment. This will ensure that the variable resistor will give out the same...
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