A 1 m long copper wire carries a current of 1 A. If the cross section of the wire is 2.0 mm 2 and the resistivity of copper is 1.7 × 10-8 Ω m. the force experienced by moving electron in the wire is × 10-23 N (charge on electron =1.6 × 10-19 C )

Question

A 1 m long copper wire carries a current of 1 A. If the cross section of the wire is 2.0 mm 2 and the resistivity of copper is 1.7 × 10-8 Ω m. the force experienced by moving electron in the wire is × 10-23 N (charge on electron =1.6 × 10-19 C ) (A)  (B)  (C)  (D)

Tardigrade Admin · Accepted Answer

l=1 m i =1 A Area =2 × 10-6 ρ=1.7 × 10-8 R =(ρ ℓ/ A )=(1.7 × 10-8 × 1/2 × 10-5)=(1.7/2) × 10-2 v =(1.7/2) × 10-2 F =1.6 × 10-19 × (1.7/2) × 10-2 =1.36 × 10-21 =136 × 10-23

Q. A 1m long copper wire carries a current of 1A. If the cross section of the wire is 2.0 mm2 and the resistivity of copper is 1.7×10−8 Ωm. the force experienced by moving electron in the wire is _____×10−23N (charge on electron =1.6×10−19C )

l=1m i=1A Area =2×10−6 ρ=1.7×10−8 R=Aρℓ​=2×10−51.7×10−8×1​=21.7​×10−2 v=21.7​×10−2 F=1.6×10−19×21.7​×10−2 =1.36×10−21 =136×10−23