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Below is a table illustrating the effect of changing the variables see Table I will ensure experimental safety by confirming that all the wires are connected properly and that none of the insulation on the wires is worn. I will also ensure that there is a clear indication that the power is isolated by means of a switch and an L. I will stand up during the investigation to ensure that I do not injure myself if something breaks.
Below is a table of my results Table 3. I have taken three reading and have worked out the average, shown in red. Table 3 shows that as the length of the wire increases, the resistance increases, as well. This confirms the first part of my prediction: In addition, my prediction that doubling the length of the wire increases the resistance by a factor of two is correct see Table 4.
Graphing these results shows a nearly straight line, illustrating a strong positive correlation between length and resistance, which is consistent with my prediction. Overall, my results are very consistent with my predictions.
Most of the data points were on, or very close to, the line of best fit. There are a few data points that are farther away from the line of best fit than the others, but they are still consistent with the general trend. There are no anomalous results that I would consider to be far away from the line of best fit. There are possible sources of error that might have led to inconsistent results, such as a kink in the wire. This would have prevented the area of the wire from remaining constant and would have affected my results.
However, I made sure that the wire remained straight throughout the experiment. I think that the range of my results was sufficient enough for me to draw a valid conclusion about how the length of the wire affected the resistance.
This was because I could plot a graph and show the general trend. However, I think that unless I had specialist equipment the results would be distorted because the wire would eventually get very hot. Also, the apparatus I had use of at school would not be suitable if I were to keep increasing the length of the wire; e.
I think my method could have been improved to produce results that were even more consistent. I could have considered using a new piece of wire each time in order to regulate the temperature more stringently. Using the same piece of wire throughout the experiment meant its temperature rose slightly over time, which may have affected my results.
However, using new pieces of wire each time would have been too impractical and time-consuming in the context of this lesson. Overall, I think my method was sufficient to obtain reliable results. To support my prediction and conclusion, I could do further experiments. For example, I could use different types of wire instead of using only nichrome.
I could also consider using different cross-sectional areas of wires or even change the temperature of the wires deliberately and see how manipulating these variables affect the resistance of the wire. Sign in or sign up and post using a HubPages Network account. Comments are not for promoting your articles or other sites. Thanks, this helped me with my investigation in Physics, I was really confused about it. I know you stated it was Nichrome, and cm long, but the SWG is not stated - Am using your data as secondary data and need to compare my investigation and yours.
This is by far the beast source of information I could find for my coursework, you are awesome: This had really helped me with my Year 9 work. I really appreciate the info you have logged into this. Once again, thank you!
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Resistivity Length of the wire Cross-sectional area Temperature of the wire I will investigate how the length of the wire affects the resistance.
Preliminary Investigation Below are my results from the preliminary experiment see Table 1. Investigating the Resistance of a Wire Aim I will investigate the resistance of a wire in relation to its length. Prediction I predict that the longer the wire, the larger the resistance. Apparatus The apparatus I will use in this experiment is as follows: Ensuring Accuracy To ensure accuracy I will record the voltage and the current three times every 5cm and take the average reading.
Variables There are different variables that can be changed in this experiment; these are the independent variable. Below is a table illustrating the effect of changing the variables see Table 2: Safety I will ensure experimental safety by confirming that all the wires are connected properly and that none of the insulation on the wires is worn.
Results Below is a table of my results Table 3. Graph Graphing these results shows a nearly straight line, illustrating a strong positive correlation between length and resistance, which is consistent with my prediction. Discussion Overall, my results are very consistent with my predictions. I used some of the data for my physics homework so thanks for that. Just remember to keep on munching chicken like me.
Thank you so much for this as it helped a lot in my physics class. This was really helpful for my controlled assessment. Thanks, I needed a secondary data source for my controlled assessment.
Glad I could help! Glad to hear it, Lucy. Best of luck with your future tests and exams. Must be of great help for those students who are doing physics.
Apr 19, · An investigation into the resistance of a wire. Free GCSE physics coursework drakon4k-money.tks:
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Jan 08, · Physics Coursework - Resistance of a wire? I am currently doing my Physics coursework and i was just wondering if you could help me get a bit more scientific information on why things occured and happened the way they drakon4k-money.tk: Resolved. Resistance of a Wire - 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.
Physics GCSE coursework: resistance of a drakon4k-money.tkts from this document Introduction. Physics coursework Background Information Resistance is the force. Apr 12, · For the resistance of a wire coursework, i have already done it based on experimenting with different lenghts against resistance. for the evaluation, i need to write an extension on the coursework: i have a few ideas already • Experimenting with other types of materials of wires to see if they follow the same pattern.