Please solve this question experts...

Dear Student,Given,l=1km=103m,r=1mm=1×10-3m, ρ=1.72×10-8ΩmArea of cross section  of the wire is,A=πr2=π×10-32=3.14×10-6m2Resistance of the wire is,R=ρlAR=1.72×10-8×1033.14×10-6=1.72×10-53.14×10-6=0.547×10=5.47Ω,Option ARegards.

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