Question 5 .... A current of 3.70 A is carried by a 250 m long copper wire of radius 1.25 mm. Assume an electronic density of 8.47 x 1028 m-3, resistivity p = 1.67 × 10-$2 · m, and resistivity temperature coefficient of a = 4.05 x 10-3 °C-1 at 20 °C. .. 8 (a) Calculate the drift speed of the electrons in the copper wire. (b) Calculate the resistance of the at 35°C. (c) Calculate the difference of potential between the two ends of the copper wire.

Question 5 .... A current of 3.70 A is carried by a 250 m long copper wire of radius 1.25 mm. Assume an electronic density of 8.47 x 1028 m-3, resistivity p = 1.67 × 10-$2 · m, and resistivity temperature coefficient of a = 4.05 x 10-3 °C-1 at 20 °C. .. 8 (a) Calculate the drift speed of the electrons in the copper wire. (b) Calculate the resistance of the at 35°C. (c) Calculate the difference of potential between the two ends of the copper wire.

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 15P: If the current carried by a conductor is doubled, what happens to (a) the charge carrier density,...

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