If the wire is heated to 34.0°C while the 7.00-V potential difference is maintained, what is the resulting current in the wire?
If the wire is heated to 34.0°C while the 7.00-V potential difference is maintained, what is the resulting current in the wire?
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determine the current in the wire. (Use the values in the following table.)
If the wire is heated to 34.0°C while the 7.00-V potential difference is maintained, what is the resulting current in the wire?
![(a) A 34.7-m length of copper wire at 20.0°C has a radius of 0.31 mm. If a potential difference of 7.00 V is applied across the length of the wire, determine the current in the wire. (Use the values in
the following table.)
Material
Resistivity (0 · m)
Temperature Coefficient of Resistivityb a [(°C)-1]
Silver
1.59 x 10-8
3.8 x 10-3
Copper
1.7 x 10-8
3.9 x 10-3
Gold
2.44 x 10-8
3.4 x 10-3
Aluminum
2.82 x 10-8
3.9 x 10-3
Tungsten
5.6 x 10-8
4.5 x 10-3
Iron
10.0 x 10-8
5.0 x 10-3
Platinum
11 x 10-8
3.92 x 10-3
Lead
22 x 10-8
3.9 x 10-3
Nichrome
1.00 x 10-6
0.4 x 10-3
Carbon
3.5 x 10-5
-0.5 x 10-3
Germanium
0.46
-48 x 10-3
Silicond
2.3 x 103
-75 x 10-3
Glass
1010-1014
Hard rubber
21013
Sulfur
1015
Quartz (fused)
75 x 1016
(a) All values at 20°C. All elements in this table are assumed to be free of impurities.
(b) See the section "Resistance and Temperature".
(c) A nickel-chromium alloy commonly used in heating elements. The resistivity of Nichrome varies with composition and ranges between 1.00 x 10-6 and 1.50 x 10-6 n. m.
(d) The resistivity of silicon is very sensitive to purity. The value can be changed by several orders of magnitude when it is doped with other atoms.
(b) If the wire is heated to 34.0°C while the 7.00-V potential difference is maintained, what is the resulting current in the wire?](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F80172120-2709-4213-9fff-d391233fdef9%2Fe8cd2f7e-bf73-467d-8e1f-00666bf6d7e9%2F8r0zgx_processed.jpeg&w=3840&q=75)
Transcribed Image Text:(a) A 34.7-m length of copper wire at 20.0°C has a radius of 0.31 mm. If a potential difference of 7.00 V is applied across the length of the wire, determine the current in the wire. (Use the values in
the following table.)
Material
Resistivity (0 · m)
Temperature Coefficient of Resistivityb a [(°C)-1]
Silver
1.59 x 10-8
3.8 x 10-3
Copper
1.7 x 10-8
3.9 x 10-3
Gold
2.44 x 10-8
3.4 x 10-3
Aluminum
2.82 x 10-8
3.9 x 10-3
Tungsten
5.6 x 10-8
4.5 x 10-3
Iron
10.0 x 10-8
5.0 x 10-3
Platinum
11 x 10-8
3.92 x 10-3
Lead
22 x 10-8
3.9 x 10-3
Nichrome
1.00 x 10-6
0.4 x 10-3
Carbon
3.5 x 10-5
-0.5 x 10-3
Germanium
0.46
-48 x 10-3
Silicond
2.3 x 103
-75 x 10-3
Glass
1010-1014
Hard rubber
21013
Sulfur
1015
Quartz (fused)
75 x 1016
(a) All values at 20°C. All elements in this table are assumed to be free of impurities.
(b) See the section "Resistance and Temperature".
(c) A nickel-chromium alloy commonly used in heating elements. The resistivity of Nichrome varies with composition and ranges between 1.00 x 10-6 and 1.50 x 10-6 n. m.
(d) The resistivity of silicon is very sensitive to purity. The value can be changed by several orders of magnitude when it is doped with other atoms.
(b) If the wire is heated to 34.0°C while the 7.00-V potential difference is maintained, what is the resulting current in the wire?
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