1 - Set up the circuit as shown in the diagram., 2 - Set the voltage to 3V, 3 - Start with the crocodile clip on 20cm, take the current from the meters and place in a table., 4 - Switch the power supply off., 5 - Move the crocodile clip up to 40cm, take the current from the meters and place in a table., 6 - Switch off the power supply again, 7 - Repeat step 4 for 60cm, 80cm and 100cm. Switch off the power supply after each reading., 8 - Repeat the whole experiment again 2 more times (a total of 3 times) placing results in the table each time., 9 - Find the average current for each reading., 10 - Calculate the resistance using the equation R = V/I, 11 - Draw a graph of length of wire on the x axis and resistance on the y axis,

Method Recap

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