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Investigate how the resistance changes when the length changes of a peice of putty
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PHYSICS COURSEWORK Conducting Putty PLAN I am investigating "How the resistance changes when the length changes." Therefore, my input variable is length. Variables: The variables I could have chosen between were the length of the putty, the thickness of the putty, heat or the type of wire/material. I chose to change the length as I felt this would be the easiest and would allow me to get the best results. In order to make the experiment fair, I have to control the other variables. Thickness I can control the thickness by checking it is the same each time I use a different length. I think that the thicker the putty is, the lower the resistance will be. This is because when you make an object thicker it is as though you are putting a single sheet in parallel. When you put something in parallel it causes the resistance lower. The thicker the object, the more...
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