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4. A composite conductor 10 m long consists of an inner core of steel of radius 1.5 cm and an outer sheath of copper whose thickness is 0.5 cm. Take the resistivities of copper and steel as 1.77x 10^(-8) and 11.8 x 10^-8 ohm- meter, respectively. (a) Determine the resistance of the conductor. (b) If the total current in the conductor is 60 A, what current flows in each metal? (c) Find the resistance of a solid copper conductor of the same length and cross- sectional areas as the sheath. (Non-anonymous questionO)

4. A composite conductor 10 m long consists of an inner core of steel of radius 1.5 cm and an outer sheath of copper whose thickness is 0.5 cm. Take the resistivities of copper and steel as 1.77x 10^(-8) and 11.8 x 10^-8 ohm- meter, respectively. (a) Determine the resistance of the conductor. (b) If the total current in the conductor is 60 A, what current flows in each metal? (c) Find the resistance of a solid copper conductor of the same length and cross- sectional areas as the sheath. (Non-anonymous questionO)

Introductory Circuit Analysis (13th Edition)
Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
Chapter1: Introduction
Section: Chapter Questions
Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...
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4. A composite conductor 10 m long consists of an inner core of steel of radius 1.5 cm and an outer sheath of copper whose thickness is 0.5 cm. Take the resistivities of copper and steel as 1.77x 10^(-8) and 11.8 x 10^-8 ohm- meter, respectively. (a) Determine the resistance of the conductor. (b) If the total current in the conductor is 60 A, what current flows in each metal? (c) Find the resistance of a solid copper conductor of the same length and cross- sectional areas as the sheath. (Non-anonymous questionO)
Transcribed Image Text:4. A composite conductor 10 m long consists of an inner core of steel of radius 1.5 cm and an outer sheath of copper whose thickness is 0.5 cm. Take the resistivities of copper and steel as 1.77x 10^(-8) and 11.8 x 10^-8 ohm- meter, respectively. (a) Determine the resistance of the conductor. (b) If the total current in the conductor is 60 A, what current flows in each metal? (c) Find the resistance of a solid copper conductor of the same length and cross- sectional areas as the sheath. (Non-anonymous questionO)
3. (Part I) A 50 V voltage generator at 20 MHz is connected to the plates of an air dielectric parallel-plate capacitor with a plate area of 2.8 cm^2 and a separation distance of 0.2 mm. Find the maximum value of displacement current density and displacement current. (Part II) A dielectric material with permeability that of free space, permittivity = 9xpermittivity of free space, conductivity = 4 S/m, is placed between the plates of a parallel-plate capacitor. Calculate the frequency at which the conduction and displacement currents are equal. (Non-anonymous question@O)
Transcribed Image Text:3. (Part I) A 50 V voltage generator at 20 MHz is connected to the plates of an air dielectric parallel-plate capacitor with a plate area of 2.8 cm^2 and a separation distance of 0.2 mm. Find the maximum value of displacement current density and displacement current. (Part II) A dielectric material with permeability that of free space, permittivity = 9xpermittivity of free space, conductivity = 4 S/m, is placed between the plates of a parallel-plate capacitor. Calculate the frequency at which the conduction and displacement currents are equal. (Non-anonymous question@O)
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