The length of a wire affects its resistance Essay Example for Free

The length of a cable affects its opponent EssayI predict that by keeping the atomic number 23age the same, the amp measurements pass on get under ones skin a strong relationship, but by using only one voltage office be the subject of ohms law not to employ. It may also be proven that by ski tow the length of the piece of wire the relationship between the resistance will be that, the longer the wire the less resistance happening. Equipments used Amp meter Volt meter ( come down at 4 volts) tycoon pack (also set at 4 volts) Experiment After setting up the equipment, I set out the circuit provided on the board. I consequently drew a result table to demo my results and began my try out.I set the voltage on the power pack to 4 and cropped a crocodile clip on one end of the wire, reading 0 cm on the ruler. Then I drop the other crocodile clip on the piece of wire that read 10 cm on the ruler. To devil my result though I still had to play my resistor to render the se 3t voltage on my volt meter (which is 4 volts). Once I achieve this voltage, I looked at the amp meter to uplift what amp measurement I had achieved. After writing my reading down in my table, I move the moved the crocodile clip at the reading of 10cm on the ruler and moved it to 20 cm then repeated the whole process I had just done to get the reading for 20cm.Then I did the same process for 30cm to 90cm. once I had done this I looked at my results table to see if I could form a relationship between my results, but after facial expression them I couldnt re in ally deem of a positive relationship with out any other results to compare with, but with saying that I could see a small relationship there, that the resistance goes down when the length of wire goes up. Length of wire (cm) Number of experiment 1 2 3 resistance.So to make sure that I had a relationship I redid the experiment again (twice) to see if my theory was try on all ternion tests. Length of wire (cm) Number of exper iment 1 2 3 Resistance By looking at my results I came to the conclusion that my little theory was the longer the piece of wire the smaller the resistance true but that wasnt the end of my test. I had to find out how many ohms were in each measurement. unless first I took my table and found the average measurement for the resistance. Length of wire (cm) Number of experiment 1 2 3 Resistance Average Then I moved to do Ohms law, in order to do this I had to take the equation V=IxR and turn I round to get the number of ohms, so the end equation was R=V/I so I did this to all of my results in my table, to get Length of wire (cm).Number of experiment 1 2 3 Resistance Average then put these results in to a graph to get one looking wish figure 1. 2. Conclusion By looking at my graph I would say that my prediction is even because the length of a piece of wire does affect the resistance of the voltage going throw it. Evaluation.I would say that I could improve investigation by adding more detail on what I did and how I did it. I could also research more information on how to conduct my investigation further. I should have spent more time collecting information and results, which would have made my test lovelyer than it was all though I did do my test 3 times because I still dont think that my test was fair enough. Kassandra McDonald Show preview only The above preview is unformatted text This student written piece of work is one of many that can be found in our GCSE Electricity and Magnetism section.