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Aim I aim to find out if the length of a wire affects its electrical resistance and if so, to what extent. Prediction I predict that the longer a piece of wire is, the higher its resistance, and the less current it will let through. This is because the electrons lose energy trying to get through the rigid structure of the ions in the wire which slows them down through collisions. Therefore, if they are losing energy all the time they are travelling through the wire, the longer the wire, the more energy lost. Apparatus 5 wires Ammeter Voltmeter Power pack 2 Crocodile clips 1m of nicrome wire Metre rule Method Set up the apparatus as in the diagram, with the voltmeter in parallel with the variable length of wire, and the ammeter in series with it. Place one crocodile clip at the end of the nicrome wire, and the other exactly 10cm (as measured by the metre rule)...

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