Aim: The aim of my investigation is to investigate how length affects the resistance of a length of wire The resistance of a wire depends on certain factors. Some of these variables are listed below: * Length of wire * Diameter of wire * Temperature at which wire is at * The material of which wire is made out of * The potential difference across circuit * Cross sectional area These must be kept constant (except the length of the wire). …showed first 75 words of 4338 total…

…showed last 75 words of 4338 total…precise readings from my power pack (so I would not compromise or increase the voltage in the circuit. I would have used connectors rather than crocodile clips to add further reliability to my results. I would have let my wire cool down before proceeding with the remainder of the experiment. Nevertheless, I have proven that the length of a wire is directly proportional to the resistance, no matter how many volts you pass through it.