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Resistance of a metal wire of length 1m is 26Ω at 20oC. If the diameter of the wire is 0.3 mm,

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asked Jan 22, 2018 in Physics by Kundan kumar (49,132 points) ● 34 ● 381 ● 1015

Resistance of a metal wire of length 1m is 26Ω at 20oC. If the diameter of the wire is 0.3 mm, what will be the resistivity of the metal at that temperature?

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answered Jan 22, 2018 by Vikash Kumar (144,729 points) ● 8 ● 11 ● 21
selected Jan 23, 2018 by Kundan kumar
 
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Given the resistance of the wire R=26Ω, the diameter d=0.3mm=3x10-4 m, and the length of the wire l=1m. 

The resistivity of the given metallic wire is

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