Do no. 3 only 4:50 Ф Ьll all 24% -1. A metallic conductor has a resistivity of 18 x 100-m. What is the resistance of a piece that is30m long and has a uniform cross-sectional area of 3.0 x 10 m?2. How long is a wire made from 100 cm of copper if its resistance is 8.5 ohms? The resistivity ofcopper is 1.7 x 10Qm.3. A 0.20-m-long metal rod has a radius of 1.0 cm and a resistance of 3.2 x 10 a. What is theresistivity of the metal?II

We need to find out resistivity for given metal .

Answered: 3. A 0.20-m-long metal rod has a radius…

Engineering

Electrical Engineering

3. A 0.20-m-long metal rod has a radius of 1.0 cm and a resistance of 3.2 x 10 2. What is the resistivity of the metal?

Electricity for Refrigeration, Heating, and Air Conditioning (MindTap Course List)

10th Edition

ISBN:9781337399128

Author:Russell E. Smith

Publisher:Russell E. Smith

Chapter16: Installation Of Heating, Cooling, And Refrigeration Systems

Section: Chapter Questions

Problem 1RQ

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Question

Do no. 3 only

4:50 Ф Ь
ll all 24% -
1. A metallic conductor has a resistivity of 18 x 100-m. What is the resistance of a piece that is
30m long and has a uniform cross-sectional area of 3.0 x 10 m?
2. How long is a wire made from 100 cm of copper if its resistance is 8.5 ohms? The resistivity of
copper is 1.7 x 10Qm.
3. A 0.20-m-long metal rod has a radius of 1.0 cm and a resistance of 3.2 x 10 a. What is the
resistivity of the metal?
II

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