resiatance of a wire

Investigating how the Length of a Wire Affects the Resistance
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Investigating how the Length of a Wire Affects the Resistance
Aim:

The aim of this is to investigate how the length of a wire affects the resistance of it.

Prediction:

I predict that the longer the piece of wire, the greater the resistance will be. This is due to the idea of the free moving electrons being resisted by the atoms in the wire. In a longer piece of wire, there would be more atoms for the electrons to collide with and so the resistance would be greater. The relationship between the wire length and the resistance should be directly proportional. This is because in a wire twice the length of another wire there would be double the amount of atoms causing the resistance.

An example of this would be in a 20cm wire. The electrons would have to travel double to distance if it have to go through a 10cm wire. This would in turn double the amount of atoms that the electrons wo...