Please solve this question experts... Share with your friends Share 0 Rohit Babu answered this 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=ρlA⇒R=1.72×10-8×1033.14×10-6=1.72×10-53.14×10-6=0.547×10=5.47Ω,Option ARegards. 0 View Full Answer Umesh Vaishnav answered this Bro I need girlfriend 0