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 .

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 .

University Physics Volume 2

18th Edition

ISBN:9781938168161

Author:OpenStax

Publisher:OpenStax

Chapter9: Current And Resistance

Section: Chapter Questions

Problem 63P: Consider a power plant is located 60 km away from a residential area uses Q-gauge (A=42.40mm2) wire...

See similar textbooks

Similar questions

If the current carried by a conductor is doubled, what happens to (a) the charge carrier density, (b) the current density, (c) the electron drift velocity, and (d) the average time interval between collisions?
Consider a power plant is located 60 km away from a residential area uses Q-gauge (A=42.40mm2) wire ofcopper to transmit power at a current of I = 100.00 A.How much more power is dissipated in the copper wires than it would be in superconducting wires?
Consider a wire of a circular cross-section with a radius of R = 3.00mm. The magnitude of the currentdensity is modeled as J=cr2=5.00106Am4r2 . Whatis the current through the inner section of the wire from the center to r = 0.5R?
Calculate the drift velocity (in m/s) of electrons in a 15 gauge silver wire (which has a diameter of 1.449 mm) carrying an 18.4 A current, given that there is one free electron per silver atom. The density of silver is 1.05 ✕ 104 kg/m3. (Indicate the direction with the sign of your answer.) m/s
consider a conducting wire made of copper. copper has a carrier density of 8.5x10^28 carriers/m^3 and an electrical resistivity of 1.7x10^-8 ohms*m and a charge of 1e/carrier. If a potential difference of 12V is applied between the ends of a copper wire that is 100m long and 1.0mm in diameter, how much current will flow?
A typical wire for laboratory experiments is made of copper and has a radius 0.815 mm.Calculate the drift speed of electrons in such a wire carrying a current of 1 A, assuming one freeelectron per atom. (density of copper 8.93 g/cm3 and molar mass of copper 63.5 g/mol)
Consider a resistor of resistivity 3.96 × 10-8 Ω • m. If an electric field of 12 V/m is applied across the resistor and the electron volume concetration in the conductor is 5.16 × 1028 per m3, determine the drift velocity, in mm/s, of the free electron constituting the current.
The current flowing in a given circuit can be described by the function: I(t) = Imax(1 - e-t/τ), where Imax = 25 A and T = 2.4 s. At what time in seconds is the current equal to 75% of the maximum current? How much charge in coulombs, passes through a point in the circuit as the current increases from 0 to 75% of the maximum current?
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 .
The 12-gauge copper wire in a typical residential buildinghas a cross-sectional area of 3.31 # 10$6 m2. If it carries acurrent of 10.0 A, what is the drift speed of the electrons?Assume that each copper atom contributes one freeelectron to the current. The density of copper is 8.95 g/cm3.
What is the resistance of a copper bus bar 9.15 meter long and 7.62 cm by 1.27 cm in cross section? Use 1.78 μΩ-cm specific resistance for copper.
A 500-W heating coil designed to operate from 110 V is made of Nichrome wire 0.500 mm in diameter. (a) Assuming the resistivity of the Nichrome remains constant at its 20.0°C value, find the length of wire used. (b) What If? Now consider the variation of resistivity with temperature. What power is delivered to the coil of part (a) when it is warmed to 1 200°C?