Question

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

Answer 1

Resistance =Rho *(L/A)
R=26ohm
A=pie*r sqyare= 3.14*.09/4=.070
l=1m=1000mm
therefore, Rho =R*A/L=26*.070/1000=0.00182

Answer 2

Answer:

$1.84 \times {10}^{ - 6} {ohm} \: m$

Explanation:

It is the correct answer.

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