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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/nwt where w = the width of one line (0.0005m)...

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