Resistivity of constantan wire Watch

r0manticide17
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#1
Report Thread starter 12 years ago
#1
Damn coursework. Am i meant to write a prediction? What am i meant to put in it?! And id like to take 3 readings for each voltage. Is that a good idea?
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strawberry
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take five. that's best.
and yeah, you could write a prediction on what you think is going to be the result and then evaluate your prediction after the lab
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Tgirl
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Report 12 years ago
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yeah, i also think u should take five readings. but u will have to measure each voltage three times and take the average of them. my teacher says it works best, incase of any errors.
and also, you will have to show how to calculate resitivty.
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teachercol
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Best is to measure the resistance of different lengths of wire. Plot a graph to get an average value for R/L. Multiply this by an average cross-section to get resistivity.
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