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Chapter 4: Q14E (page 842)

A wire 6.50 m long with diameter of 2.05 mm has a resistance of 0.0290 鈩�. 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脳10-3mR=0.0290惟

The cross-sectional area of the wire is:

A=蟺4d2=蟺4脳2.05脳10-3m2=3.3脳10-6m2

02

Step 2:

The material used to make wire is:

蚁=RAL=0.0290惟3.3脳10-6m26.50m=1.47脳10-8惟.m

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

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