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Planning Title An investigation into the current flowing in a wire. Method 1. The apparatus was set up as shown in the diagram below. 2. Three readings were taken at each length on each wire; the same voltage had to be used through (2volts). 3. The results on voltage and current were recorded and an average was taken. The wire resistance was calculated from the average figures. Diagram Related knowledge In this experiment I am making an investigation into the current flowing in a wire. I will explain how I will attempt to do this. Firstly I need to discover what resistance is; resistance is an opposition offered by a circuit to the passage of a current through it. Resistance is calculated using ohms law [resistance = potential difference (in volts) / current (in Amps)]. There are four factors affecting resistance:- 1. temperature 2. length of wire 3. cross sectional area (thickness) 4. material of the wire 1. Temperature: If the wire is heated up the...

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