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A wire 6.50 m long with diameter of 2.05 mm has a resistance of 0.0290 Ω. What material is the wire most likely made of?

Short Answer

Expert verified

Silver is most likely the material used to make the wire.

Step by step solution

01

Step 1:

Given data:

L=6.50md=2.05mm=2.05×10-3mR=0.0290Ω

The cross-sectional area of the wire is:

A=π4d2=π4×2.05×10-3m2=3.3×10-6m2

02

Step 2:

The material used to make wire is:

ρ=RAL=0.0290Ω3.3×10-6m26.50m=1.47×10-8Ω.m

Hence, silver is most likely the material used to make the wire.

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