This is a good thing as the results will be less susceptible to error small changes in conditions in the lab like the wire heating up over time will make a difference to small values. Have a look at for details on the resistivities of the three materials. Resistance Coursework. Extracts from this document Introduction. Resistance in Wires. If I were to do this I would expect a low range of results for resistance for a larger diameter of wire.
I will expect this because more current will flow through the wire and there will be less resistance, but this will only happen if I allow the same Apr 19, 2012 These results show that as the length of the wire increases, the resistance increases, as well.
Furthermore, if you double the length of the wire, the resistance is roughly doubled. For example, when the length of the Resistance of wire coursework results is 20cm the resistance is 3. 14 ohms; when the length of the wire is 40cm the resistance is 6.
18 gcse physics science coursework: resistance of wire experiment Words: 2670 Views: 6999 Comments: 0 Risk Assessment To keep the experiment safe I shall keep electrical conductors away from the plug sockets. A simple investigation of the factors affecting the resistance of a wire. Factors Affecting the Resistance of a Metal Wire 1. Investigate some of the factors that affect the resistance of a metal wire.
The current and voltage will be measured and then V IR will be used to calculate the resistance. GCSE Physics Coursework Resistance of a Wire Coursework Resistance of a Wire Task To investigate how the resistance of a wire is affected by the length of the wire. The other graph shows that as 1area, for the wire, increases, so does the resistance of the wire.
There were no unexpected results and all the points plotted follow the same pattern and are all very close to the lines of best fit. GCSE Physics Coursework Resistance of a Wire Coursework Resistance of a Wire Task To investigate how the resistance of a wire is affected by the length of the wire. Theory What is resistance. Electricity is conducted through a conductor, in this case wire, by means of free electrons.
When the length of the wire increases, resistance increases. The table shows the resistance of different lengths of wire. What general pattern do these results show? May 02, 2017 To get the full marks for my gcse coursework" how does length affect the resistance in a wire? " I need to provide an alternative experiment that I could perform if I were to redo the investigation. I have already calculated resistance in circuit using ohm's law and predicted results using the RLA.
Oct 26, 2011 The fact that, as the wire got shorter and therefore the resistance greater, I could not keep the wire from heating up 2. The wire I was using had a tendency to wind up, diminishing my precision and accuracy in measuring the length Resistance in a Wire Coursework In this investigation we are trying to look for resistance in a piece of wire, and how the length of a wire can increase or decrease the resistance.
Investigating the effect of length on resistance is common but some students may wish to investigate the effect of the thickness of wire. In either case, different wires should be made of the same material. Students may need to know the conversion between SWG (standard wire gauge) and wire diameterradius. Resistance of a Wire Coursework. I have been asked to find out what affects the resistance of a wire. Resistance of wire coursework results have decided to go about this by seeing how changing the length of a wire affects the resistance.
When looking at my table of results I can see that if the length of the wire is doubled, so is the resistance. After looking at my results Physics GCSE coursework: Resistance of wire Aim: To investigate if the length of wire affects its resistance.
Prediction (Hypothesis): I predict that the longer the wire the higher the resistance, and the shorter the wire the lower the resistance.