How to calculate the resistance of one meter nichrome wire?
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Answer:
0.17 0.02270 5.341 0.0001907 48.02 0.19 0.02835 5.969 0.0002382 38.44 Do you really have .18 wire? Do you need it more accurate than 43.2 done by splitting the difference?
Lucas Lee at Yahoo! Answers Visit the source
Other answers
See http://en.wikipedia.org/wiki/Resistivity#Definitions From that you can calculate the resistivity, then calculate the resistance of the fatter wire. Quick&dirty: resistance goes as area [resistivity is constant here so ignore it] so resistance goes as r^2 Resistance of fatter wire = [18/17]^2 that of the thinner Check this approach by multiplying the resistance for the .17 by [19/17]^2 and see if you get the resistance for .19
See http://en.wikipedia.org/wiki/Resistivity#Definitions From that you can calculate the resistivity, then calculate the resistance of the fatter wire. Quick&dirty: resistance goes as area [resistivity is constant here so ignore it] so resistance goes as r^2 Resistance of fatter wire = [18/17]^2 that of the thinner Check this approach by multiplying the resistance for the .17 by [19/17]^2 and see if you get the resistance for .19
redbeardthegiant
0.17 0.02270 5.341 0.0001907 48.02 0.19 0.02835 5.969 0.0002382 38.44 Do you really have .18 wire? Do you need it more accurate than 43.2 done by splitting the difference?
Fred
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