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 length of a outfit on its resistance. Resistance is the measure of how unclouded it is for certain to hang up through a equip. underway is the rate of flow of tear through a conductor, and it is c arful in amps using an ammeter. To serve well me plan my investigating I have completed a preliminary investigateation in which I investigated the effect of the weightiness of a outfit on its resistance, using three constantan fits and one cocksucker cable. I found that the resistance change magnitude as the thickness of the wire decreased, however, when I did the test with the copper wire I found that it was so unresistant that there would non be a lot of point in conducting my experiment using a copper wire beca practice sitting I would not really be able to comp are the results. I therefore decided to use a wire of a higher resistance; co nstantan, because it go out stamp down 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 testament measure and light upon are the voltage running through the wire and the current. This exit allow me to calculate the resistance of the wire.

To calculate the resistance of the wire I will divide the voltage (V) by the current (I), which will 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 point 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