What is the resistance of ▾ Part A A 1.5-m-long gold wire that is 0.70 mm in diameter? Express your answer in ohms. | ΑΣΦ R= Submit Part B R= Request Answer Submit A 90-cm-long piece of carbon with a 1.0 mm x 1.0 mm square cross section? Express your answer in ohms. 195| ΑΣΦ www. ? Request Answer Ω ? Ω

What is the resistance of ▾ Part A A 1.5-m-long gold wire that is 0.70 mm in diameter? Express your answer in ohms. | ΑΣΦ R= Submit Part B R= Request Answer Submit A 90-cm-long piece of carbon with a 1.0 mm x 1.0 mm square cross section? Express your answer in ohms. 195| ΑΣΦ www. ? Request Answer Ω ? Ω

University Physics Volume 2

18th Edition

ISBN:9781938168161

Author:OpenStax

Publisher:OpenStax

Chapter9: Current And Resistance

Section: Chapter Questions

Problem 70AP: A 10.00-meter long wire cable that is made of copper has a resistance of 0.051 ohms, (a) What is the...

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Concept explainers

Temperature Variance of Resistance

Electrical resistance or simply resistance is the property of a material that opposes the free flow of electrons through it. The total amount of resistance to the flow of charges (or current) is affected by many factors like the length of the conducting material, its cross-sectional area, resistivity, and temperature.

Question

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What is the resistance of
Part A
A 1.5-m-long gold wire that is 0.70 mm in diameter?
Express your answer in ohms.
IVE ΑΣΦ
R=
Submit
Part B
R=
Request Answer
Submit
A 90-cm-long piece of carbon with a 1.0 mm x 1.0 mm square cross section?
Express your answer in ohms.
- ΑΣΦ
Boy ?
Request Answer
B
ARRAY
Ω
?
Ω

Expert Solution

Step 1

Given data-

Length of the gold wire is

$(L_{g o l d}) = 1.5 m$

Diameter of the gold wire is

$(d_{g o l d}) = 0.70 m m = 7.0 \times 10^{- 4} m$

Length of the carbon wire is

$(L_{c a r b o n}) = 90 c m = 0.90 m$

Cross-sectional area of the wire is

$(A_{c a r b o n}) = 1.0 m m \times 1.0 m m = 1.0 m m^{2} = 1.0 \times 10^{- 6} m^{2}$

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