Copper and aluminum are being considered for a high-voltage transmission line that must carry a current of 51.5 a. the resistance per unit length is to be 0.144 ω/km. the densities of copper and aluminum are 8960 and 2600 kg/m3, respectively. compute (a) the magnitude j of the current density and (b) the mass per unit length λ for a copper cable and (c) j and (d) λ for an aluminum cable.

a).Jcu= 436.44

b).λcu=1.05728

c).Jal= 274.66

d).λcu=0.487

Explanation:

a).

ζcu=1.7Ωm

ζal=2.76Ωm

wcu=ζcu*l

b).

mass per unit Copper

λcu=Dcu*Acu

λcu=8960 *1.18

λcu=1.05728

c).

wal=ζal*l

d).

mass per unit Aluminum

λal=Dal*Aal

λal=2600 *0.1875

λcu=0.487

are there options? cause you ain’t. real specific

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