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Resistance is Futile (student handout continued)
Secondary Data Analysis
The pencil lead you used for the experiment has a nominal diameter of 2 mm. Using the data from part 2, compute the pencil
lead's resistivity (ρ) for each measurement.
Plot another graph comparing the resistivity to the resistance. Explain what, if anything the graph shows in the relationship.
Speculate as to causes of the variation in the resistivity of the pencil lead.
