Resistance in a wire Planning - The resistance of a wire can be affected by certain factors: Length of wire Cross sectional area resistivity (type of metal) Type of wire Temperature I chose to investigate how length affects the resistance in a wire. This means that the other factors (variables) must be controlled. This means I must keep the same type of wire, the same material of wire (a preliminary experiment will help determine this), …showed first 75 words of 841 total…

…showed last 75 words of 841 total…would use a longer length of wire to see if the graph of resistance changes from a straight line with a much longer length of wire. I would also investigate another factor, such as diameter of the wire. I predict that if I did investigate this, when I increased the diameter the resistance would decrease. I would also do the experiments under different conditions such as temperature to see the difference this makes to resistance.