An aluminum wire with a diameter of 0.100 mm has a uniform electric field of 0.200 V/m imposed along its entire length. The temperature of the wire is 50.0°C. Assume onefree electron per atom.(a) Use the information in this Table of Resistivities and Temperature Coefficients to determine the resistivity.N.m(b) What is the current density in the wire?A / m2(c) What is the total current in the wire?(d) What is the drift speed of the conduction electrons?Vd =Âµm/s(e) What potential difference must exist between the ends of a 2.00-m length of the wire to produce the stated electric field?AV =

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Answered: An aluminum wire with a diameter of…

Principles of Physics: A Calculus-Based Text

5th Edition

ISBN:9781133104261

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter21: Current And Direct Current Circuits

Section: Chapter Questions

Problem 9P

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Taking R = 1.00 k and = 250 V in Figure P21.49, determine the direction and magnitude of the current in the horizontal wire between a and e. Figure P21.49
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An aluminum wire with a diameter of 0.125 mm has a uniform electric field of 0.255 V/m imposed along its entire length. The temperature of the wire is 35.0°C. Assume one free electron per atom. (a) Use the information in this Table of Resistivities and Temperature Coefficients to determine the resistivity (in Ω · m) of aluminum at this temperature. ρ = Ω · m (b) What is the current density (in MA/m2) in the wire? J = MA/m2 (c) What is the total current (in mA) in the wire? I = mA (d) What is the drift speed of the conduction electrons? vd = µm/s (e) What potential difference must exist between the ends of a 1.90 m length of the wire to produce the stated electric field? ΔV = V
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An aluminum wire with a diameter of 0.100 mm has a uniform electric field of 0.200 V/m imposed along its entire length. The temperature of the wire is 50.0°C. Assume one free electron per atom. (a) Use the informa- tion in Table 27.2 and determine the resistivity. (b) What is the current density in the wire? (c) What is the total current in the wire? (d) What is the drift speed of the conduction electrons? (e) What potential difference must exist between the ends of a 2.00-m length of the wire to produce the stated electric field?
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