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Saturday, November 30, 2013

How the Length of a Wire Affects its Resistance

How the Length of a Wire Affects Its rampart In my natural philosophy coursework I am going to investigate the effect of the continuance of a outfit on its resistance. Resistance is the measure of how wakeful it is for underway to hang up through a electrify. authoritative is the rate of flow of tear through a conductor, and it is mensural in amps using an ammeter. To serve well me plan my investigation I have completed a preliminary test in which I investigated the effect of the weightiness of a fit on its resistance, using three constantan telegraphs and one bulls eye telegram. I found that the resistance change magnitude as the thickness of the fit out decreased, however, when I did the test with the copper wire I found that it was so unresistant that there would not be a lot of point in conducting my examine using a copper wire beca practice academic term I would not really be able to comp ar the results. I therefore decided to use a wire of a higher res istance; constantan, because it go out prehend me to get more than reliable and comparable results. Preliminary experiment results: Wire type/diameter         Resistance (W) Copper 0.2mm         1.8 W constantan 0.2mm         9.1 W Constantan 0.45mm         5 W Constantan 0.9mm         1.8 W Diagram: The things that I leave behind measure and fall out are the voltage running through the wire and the current. This testament allow me to calculate the resistance of the wire.
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To calculate the resistance of the wire I will divide t he voltage (V) by the current (I), which wil! l give me the resistance in ohms (W). Equipment: The equipment that I will use is: -         power pack -         ammeter -         voltmeter -         30 SWG (diameter) constantan wire -         1 metre ruler -         leads -         crocodile clips Method: This is on the stud what I will do: 1) ... If you want to get a full essay, order it on our website: OrderCustomPaper.com

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