Homework Help is Here – Start Your Trial Now!
Science
Physics
An aluminium rod with square cross section is 1.3 m long and 3.8 mm on edge ) What is the resistance between its ends? The resistivity of aluminium is 2.75 * 10-8 2.m. (ii) What must be the diameter of a cylindrical copper rod of length 1.3 m if its resistance is to be the same as that of the aluminium rod? The resistivity of copper is 1.69 * 10-8 Ω.m. (iii) Calculate the current (in A) and the current density (in A/m^2) of the cylindrical copper if the potential drop across the ends of the wire is 0.060 V.

An aluminium rod with square cross section is 1.3 m long and 3.8 mm on edge ) What is the resistance between its ends? The resistivity of aluminium is 2.75 * 10-8 2.m. (ii) What must be the diameter of a cylindrical copper rod of length 1.3 m if its resistance is to be the same as that of the aluminium rod? The resistivity of copper is 1.69 * 10-8 Ω.m. (iii) Calculate the current (in A) and the current density (in A/m^2) of the cylindrical copper if the potential drop across the ends of the wire is 0.060 V.

College Physics
College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter1: Units, Trigonometry. And Vectors
Section: Chapter Questions
Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...
See similar textbooks
icon
Related questions
Question
**Problem Statement:** An aluminium rod with a square cross-section is 1.3 m long and 3.8 mm on edge. __(i)__ What is the resistance between its ends? The resistivity of aluminium is \(2.75 \times 10^{-8} \, \Omega \cdot \text{m}\). __(ii)__ What must be the diameter of a cylindrical copper rod of length 1.3 m if its resistance is to be the same as that of the aluminium rod? The resistivity of copper is \(1.69 \times 10^{-8} \, \Omega \cdot \text{m}\). __(iii)__ Calculate the current (in A) and the current density (in A/m²) of the cylindrical copper rod if the potential drop across the ends of the wire is 0.060 V. **Select one:** - **a.** (i) \(3.27 \times 10^{-3} \, \Omega\) (ii) \(8.14 \times 10^{-3} \, \text{m}\) (iii) \(I = 18.3 \, \text{A}\) and \( J = 2.64 \times 10^{6} \, \text{A/m}^{2} \) - **b.** (i) \(2.50 \times 10^{-3} \, \Omega\) (ii) \(3.4 \times 10^{-3} \, \text{m}\) (iii) \(I = 24 \, \text{A}\) and \( J = 2.64 \times 10^{6} \, \text{A/m}^{2} \) - **c.** (i) \(2.50 \times 10^{-3} \, \Omega\) (ii) \(3.4 \times 10^{-3} \, \text{m}\) (iii) \(I = 24 \, \text{A}\) and \( J = 2.08 \times 10^{6} \, \text{A/m}^{2} \) - **d.** (i) \(3.27 \times 10^{-3} \, \Omega\) (ii) \(15.3 \times 10^{-3} \, \text
Transcribed Image Text:**Problem Statement:** An aluminium rod with a square cross-section is 1.3 m long and 3.8 mm on edge. __(i)__ What is the resistance between its ends? The resistivity of aluminium is \(2.75 \times 10^{-8} \, \Omega \cdot \text{m}\). __(ii)__ What must be the diameter of a cylindrical copper rod of length 1.3 m if its resistance is to be the same as that of the aluminium rod? The resistivity of copper is \(1.69 \times 10^{-8} \, \Omega \cdot \text{m}\). __(iii)__ Calculate the current (in A) and the current density (in A/m²) of the cylindrical copper rod if the potential drop across the ends of the wire is 0.060 V. **Select one:** - **a.** (i) \(3.27 \times 10^{-3} \, \Omega\) (ii) \(8.14 \times 10^{-3} \, \text{m}\) (iii) \(I = 18.3 \, \text{A}\) and \( J = 2.64 \times 10^{6} \, \text{A/m}^{2} \) - **b.** (i) \(2.50 \times 10^{-3} \, \Omega\) (ii) \(3.4 \times 10^{-3} \, \text{m}\) (iii) \(I = 24 \, \text{A}\) and \( J = 2.64 \times 10^{6} \, \text{A/m}^{2} \) - **c.** (i) \(2.50 \times 10^{-3} \, \Omega\) (ii) \(3.4 \times 10^{-3} \, \text{m}\) (iii) \(I = 24 \, \text{A}\) and \( J = 2.08 \times 10^{6} \, \text{A/m}^{2} \) - **d.** (i) \(3.27 \times 10^{-3} \, \Omega\) (ii) \(15.3 \times 10^{-3} \, \text
Expert Solution
steps

Step by step

Solved in 3 steps

SEE SOLUTIONCheck out a sample Q&A here
Blurred answer
Knowledge Booster
Combination of resistance
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, physics and related others by exploring similar questions and additional content below.
Recommended textbooks for you
College Physics
College Physics
Physics
ISBN:
9781305952300
Author:
Raymond A. Serway, Chris Vuille
Publisher:
Cengage Learning
University Physics (14th Edition)
University Physics (14th Edition)
Physics
ISBN:
9780133969290
Author:
Hugh D. Young, Roger A. Freedman
Publisher:
PEARSON
Introduction To Quantum Mechanics
Introduction To Quantum Mechanics
Physics
ISBN:
9781107189638
Author:
Griffiths, David J., Schroeter, Darrell F.
Publisher:
Cambridge University Press
Physics for Scientists and Engineers
Physics for Scientists and Engineers
Physics
ISBN:
9781337553278
Author:
Raymond A. Serway, John W. Jewett
Publisher:
Cengage Learning
Lecture- Tutorials for Introductory Astronomy
Lecture- Tutorials for Introductory Astronomy
Physics
ISBN:
9780321820464
Author:
Edward E. Prather, Tim P. Slater, Jeff P. Adams, Gina Brissenden
Publisher:
Addison-Wesley
College Physics: A Strategic Approach (4th Editio…
College Physics: A Strategic Approach (4th Editio…
Physics
ISBN:
9780134609034
Author:
Randall D. Knight (Professor Emeritus), Brian Jones, Stuart Field
Publisher:
PEARSON
SEE MORE TEXTBOOKS