Resistance Of Wire Investigation (length)

Plan In this investigation I am going to investigate how the length of a piece of wire affects its resistance. The following are all variables that affect the resistance of the wire: - The thickness of the wire is a big variable as the thinner the wire the bigger the resistance. This is because the current has to squeeze through a thin wire, but it can easily flow through a thicker one. - The length …

…variables that can effect the results, as shown in my plan. I know that my results are accurate as I used a ruler accurate to 1 millimetre, an accurate needle ammeter and a voltmeter accurate to 100th of a volt. If I did this again I could do it in a controlled environment and I could also use more accurate equipment, e.g. a more accurate voltmeter. I could also do more results e.g. 10,20,30,40,50 ect.