Example results

IB Physics: Example results

To vary the area multiple lines were drawn next to each other on the paper. Each line had width of 0.5 mm. The cross sectional area of the line is proportional to the number of lines drawn so 1/n was calculated to test if R was proportional to 1/A.A graph of R vs 1/n was then plottedThis gives quite a good correlation.Gradient = 627 kΩAccording to the formula R = ρL/A = ρL/nwtwhere w = the width of one line (0.0005m)t...

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