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OpenStudy (anonymous):

UNITS OF RESISTIVITY - Calculate the resistance of 100cm length of wire having a uniform cross-sectional area of 0.1mm^2 if the wire is made of manganin having a resistivity of 50x10^8 ohms-m. if the wire is drawn out to three times its original length, by how many times would you expect its resistance to be increased? Ans(500ohms; 9 times) Need solution, please help...

OpenStudy (anonymous):

I get the 500ohms, but i don't know how to get the other.

OpenStudy (anonymous):

L=100m, typo

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