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.

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

If you want to get a full essay, visit our page: write my paper