... is the length of the graphite paper, so I will need a ruler to measure the lengths of graphite paper, a pair of scissors to cut the paper to the desired length, a pair of modified bulldog clips to attach the paper to the circuit, a power supply/battery for the electricity and some leads to link the circuit up. I knew that this set of apparatus would be suitable for this experiment as I tested them before I started this investigation. During my experiment I will be reading the current of the circuit. I will be changing my variable, length by having 10 different measurement readings starting with 30cm and finishing with 3cn going down by 3cm each time. Using this large variation in lengths will mean that my readings are more precise. I will also take 2 readings for each measurement by breaking the circuit and reconnecting it. All my ...

See this essay or coursework document in full right now