Unit resistance

What is the resistance of a two-conductor line 10 m long made of 4.0 mm2 aluminum wire?

Correct answer:

R =  0.1325 Ω

Step-by-step explanation:

l=2 10=20 m S=4.0 1064106 m2  ρ=2.65 1082.65108 Ωm R=ρ Sl=2.65108 410620=0.1325 Ω



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Showing 1 comment:
Peter
electrical resistivity for copper is 1.724 x 10 -8 Ω m (0.0174 μΩ m) and electrical resistivity for aluminum 2.65 x 10 -8 Ω m (0.0265 μΩ m)





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