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How Does the Length of Wire Effect its Resistance? Planning: Prediction/Hypothesis From what I know of resistance and the way that it alters I predict that as you lengthen the piece of wire the resistance will increase also. This is what I think will happen and I think this because I already know some information about resistance and have also done some preliminary work on this investigation. In my circuit I will be using a power source which will create a potential difference between the two poles, one will be charged negatively while the other is charged with a positive charge. This is important to know as this effects the way electrons will move in a piece of metal wire. In a metal wire piece there is an arrangement of atoms and electrons, which look something, like this: However once a power source is added which has a negative pole and positive pole the electrons behave...

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