Question

the resistance of metal wire of length 1m is 26 ohm.if diameter of the wire is 0.3mm what will be the resistivity of the metal (note:there's no temperature mentioned,so please give the correct answer)




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Answer 1

Answer:

1.84 *10^(-6) Ωm

Explanation:

R = ρl /A

d/2=r (changing 0.3mm into m)

0.0003/2=r  

A= πr^2

26= ρ(1)/(22/7*0.0003*0.0003/4)

26*22/7*0.0003*0.0003/4= ρ

1.84*10^(-6) Ωm

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