A 0.500-meter length of wire with a cross-sectional area of 3.14 x 10-6 meters squared is found to have a resistance of 2.53 x 10-3 ohms. According to the resistivity chart, from what material is the wire made?
A 0.500-meter length of wire with a cross-sectional area of 3.14 x 10-6 meters squared is found to have a resistance of 2.53 x 10-3 ohms. According to the resistivity chart, from what material is the wire made?
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Question
Transcribed Image Text:Resistivities at 20°C
Material
Aluminum
Copper
Gold
Nichrome
Silver
Tungsten
Resistivity (2 m)
2.82 × 10-8
1.72 × 10-8
2.44 x 10-8
150. × 10-8
1.59 × 10-8
5.60 × 10-8
Resistivity (ρ) Ωm
Aluminum
2.82 x 10-8
1.72 x 10-8
Copper
Silver
1.59 x 10-8
Carbon
3.5 x 10-5
Teflon
1 x 1016
10131016
Rubber (hard)
Maple wood
Silicon
30 x 1010
20-2300
2. A 0.500-meter length of wire with a cross-sectional area of 3.14 x 10-6 meters
squared is found to have a resistance of 2.53 x 10-3 ohms. According to the
resistivity chart, from what material is the wire made?
Given:
Find:
Formula:
Substitution:
Solution:
Material
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