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Find out how we can reduce the resistance of the wire.
Member rating: No Rating | Words: | Submitted: Fri Oct 29 2004
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Physics investigation We know that when we send electricity from the power stations to our homes some of the electrical energy is "lost" due to the resistance of the wire. To reduce this loss we send the energy at a high voltage and a low current. In this investigation we want you to find out how we can reduce the resistance of the wire. Preliminary investigation In order for us to do our final investigation we must do a preliminary investigation. This way I can find out how the temperature affects the resistance of the wire. And so I know what current measurements to use in our final experiment. Variables: - cross section Length Material Temperature Voltage (volts) Current (amps) Resistance 0.00 0.00 0.00 1.00 0.15 6.67 2.00 0.30 6.67 3.00 0.45 6.67 4.00 0.60 6.67 5.00 0.75 6.67 6.00 0.90 6.67 7.00 1.05 6.67 8.00 1.20 6.67 9.00 1.35 6.67 10.00 1.50 6.67 Conclusion for graph The results from the graph show us that the resistance stays the same. However the maximum current that we could use for the experiment is 1-amp. At around this level the current heats the...
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