Resistance of a Wire :: Papers

metro of a Wire Introduction Resistance is the opposition a material offers to the flow of electricity. The electrical subway system of an bearing is not only by what material its made of, but alike by its shape. A very thin copper wire has more(prenominal) resistance than a thick copper wire of the same continuance. A very long copper wire has more resistance than a short one of the same thickness. Resistance is measured in Ohms. Variables in that location were three variables that our group was able to choose from the aloofness of the wire, the bea of the wires hybridisation section (thickness) or the display case of wire (constantan or nichrome). All of these variables are able to form the resistance of the wire. Here are my thoughts and predictions on what would come to the resistance of the wire as you change the variables. I think that if you change the length of the wire then the resistance would increase as the length increased b ut the current would decrease. If you changed the thickness of the wire then the resistance would decrease as the wire got thicker but the current would increase. If you change the type of wire then you will receive different results, as in that respect may be more or less resistance surrounded by types of wire. To study the resistance or wire we experimented on changing the length of nichrome wire. We measured the volts and amps over 1 metre I worked out the resistance using my calculator. We carried out this experiment 5 times to make the results fair. We let the wire cool down a bit between doing the experiments, as its temperature did tend to increase as we got to the end of each experiment. Analysis We took a set of practice results before starting the experiment. Here they are. Wire Volts Amps Ohms 10cm 2.63 2.53 1.04 50cm 4.16 0.82 5.