Investigating how the length of wire affects the resistance

Planning: Risk Assessment: *         I will handle the power supply carefully. *         I am going to only use a maximum voltage of 2 volts. *         I will be careful when handling the mains equipment. *         I will make sure I have a clear space to work in and nothing on the floor around me. In this investigation, I will set up a simple circuit to be able to read the voltage and current when the length of wire changes, so …

…because of the increase in energy, causing more collisions, resulting in an increase in resistance. I have chosen this alloy since temperature does not affect its resistance in a great way. Therefore when I am investigating its length and if at any time the wire heats up, the temperature will not affect its resistance. I will do the test twice and take the average resistance from both to make sure I have an accurate result.