Length affects the resistance

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). …

…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.