Aim: The aim of this investigation is to investigate and discover if the length of a piece of metal wire effects its resistance when electricity is passed through it. Prediction Before I make a prediction I shall explain about atoms, free electrons, electricity and resistance. Electricity travels through a conductor, in this case a length of wire, by means of free electrons. Electrons are the smallest parts of an atom that is situated in shells (…showed first 75 words of 2502 total…

…showed last 75 words of 2502 total…would have made it any more accurate. I feel that the only way to make it more accurate would be to use a different method - perhaps were we had a thin metal bar that was strong and did not bend like the piece of wire. We could have used a different instrument like an ohmmeter to measure the resistance instead of measuring the voltage and current and then dividing the voltage by the current.