Calculate the drift velocity of electrons in a 12-gauge copper wire (which has a diameter of 2.053 mm) carrying a 20.0-A current, given that there is one free electron per copper atom. (Household wir 8.80 x 10 kg/m, ins 12-gauge copper wire, and the maximum current allowea in such wire is usually 20 A.) The density of copper is

Calculate the drift velocity of electrons in a 12-gauge copper wire (which has a diameter of 2.053 mm) carrying a 20.0-A current, given that there is one free electron per copper atom. (Household wir 8.80 x 10 kg/m, ins 12-gauge copper wire, and the maximum current allowea in such wire is usually 20 A.) The density of copper is

University Physics Volume 2

18th Edition

ISBN:9781938168161

Author:OpenStax

Publisher:OpenStax

Chapter9: Current And Resistance

Section: Chapter Questions

Problem 28P: An aluminum wire 1.628 mm in diameter (14-gauge) carries a current of 3.00 amps, (a) What is the...

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An aluminum wire 1.628 mm in diameter (14-gauge) carries a current of 3.00 amps, (a) What is the absolute value of the charge density in the wire? (b) What is the drift velocity of the electrons? (c) What would be the drift velocity if the same gauge copper were used instead of aluminum? The density of copper is 8.96 g/cm3 and thedensity of aluminum is 2.70 g/cm3. The molar mass ofaluminum is 26.98 g/mol and the molar mass of copper is 63.5 g/mol. Assume each atom of metal contributes one free electron.
A 14-gauge copper wire has a diameter of 1.628 mm. What magnitude current flows when the drift velocity is 1.00 mm/s? (See below example for useful information.) Calculate the drift velocity of electrons in a 12-gauge copper wire (which has a diameter of 2.053 mm) carrying a 20.0-A current, given that there is one free electron per copper atom. (Household wiring often contains 12-gauge copper wire, and the maximum current allowed in such wire is usually 20 A.) The density of copper is 8.80 x 103 kg/m3 .
Using the results of the below example, find the drift velocity in a copper wire of twice the diameter and carrying 20.0 A. Calculate the drift velocity of electrons in a 12-gauge copper wire (which has a diameter of 2.053 mm) carrying a 20.0-A current, given that there is one free electron per copper atom. (Household wiring often contains 12-gauge copper wire, and the maximum current allowed in such wire is usually 20 A.) The density of copper is 8.80 x 103 kg/m3 .
ostro Imssb1.mutah.edu.jo/r A conductor has a cross-sectional area of 2.3x 10-6 m2 and the number of free electrons per unit volume is 8.5x 1028 electron/m. When the current is 9 A, find the drift speed (in mm/s) of the electrons. Use the charge of the electron to be 1.6x 10-19 C
You find a long silver metal rod with a circular cross-section and you measure its cross-section diameter to be 1 mm. You set the rod up in a way that a current of 2 A passes through its cross-section. The free-electron density of silver is 5.9 ×1028m-3. Given this information, what is the magnitude of the drift speed of the electrons flowing in the rod? (Express the speed in mm/s with two decimal places)
A wire has a radius of 1.90 mm. If the current in the wire is 6.14 A, the drift velocity is 4.86 x 10-5 m/s. What is the concentration of free electrons in the metal?
A conductor has a cross- sectional area of 2.3\( \times )106 m² and the number of free electrons per unit volume is 8.5\( \times )1028 electron/m³. When the current is 17.8 A, find the drift speed (in mm/s) of the electrons. Use the charge of the electron to be 1.6\( \times )10-19 C. Select one: A. 56.91 B. 74.71 C. 0.75 D. 0.39 O E. 0.57
A wire of Nichrome is 1.0 m long and 2.5 mm2in cross-sectional area. It carries a current of 4.0 A. When a 12.0 V potential difference is applied between the ends. Calculate the conductivity δ of the Nichrome.
A copper wire has a circular cross-section with a radius of1.25 mm. (a) If the wire carries a current of 3.70 A, findthe drift speed of electrons in the wire. (Take the density ofmobile charge carriers in copper to be n= 1.10 x 1029 electrons/m3.) (b) For the same wire size and current, find thedrift speed of electrons if the wire is made of aluminum withn= 2.11 x 1029 electrons/m3.
An aluminum wire 1.628 mm in diameter (14-gauge) carries a current of 3.00 amps. (a) What is the absolute value of the charge density in the wire? (b) What is the drift velocity of the electrons? (c) What would be the drift velocity if the same gauge copper were used instead of aluminum? The density of copper is 8.96 g/cm3 and the density of aluminum is 2.70 g/cm3 . The molar mass of aluminum is 26.98 g/mol and the molar mass of copper is 63.5 g/mol. Assume each atom of metal contributes one free electron.
A length of No. 06 copper-wire, which has a diameter of 3.20 mm, carries a steady current of 20 A. What is the average current density in the wire?
Calculate the drift velocity of electrons in a 12-gauge copper wire of twice the diameter (which has a diameter of 2.053 mm) carrying a 20.0-A current, given that there is one free electron per copper atom. (Household wiring often contains 12-gauge copper wire, and the maximum current allowed in such wire is usually 20 A.) The density of copper is 8.80×103 kg/m3 .