... is the same distance of an average arms length. Also we can get 10 readings of results from a 1metre length of metal wire if each reading is taking every 10cm. * Factors that affect resistance: Heat (temperature) Area Material Length * Which of these variables is the best variable to measure in the experiment? Length is the best variable because * Materials to consider to use for the experiment: Copper Con Plan * The apparatus will be collected as follows: Clamp stand 3 springs Metre rule 100g weights Set square * Then experiment will be set up with the apparatus with the spring attached to the clamp. * 100g weights will be added to the spring. The extension will be measured and recorded each time a 100g weight is added. * 100g weights will be added to the spring until the spring cannot hold the weights any more and it brakes. * This method will be repeated two more times so an averages can be taken. Averages ...

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