A copper wire has a cross sectional area A1=10 °m and has a density of charge carriers of 102' electrons/m. As shown in the figure, the copper wire is attached to an equal length of aluminum wire with a cross sectional area A2 =7x 10 m² , and density of charge carriers of 5 x 102 electrons/m. A current of 6 A flows through the copper wire. Approximate resistivities of copper and aluminum are pcu = 2 x 10 ° Q.m and pẠI = 3 x 10 Q.m respectively. %3D

A copper wire has a cross sectional area A1=10 °m and has a density of charge carriers of 102' electrons/m. As shown in the figure, the copper wire is attached to an equal length of aluminum wire with a cross sectional area A2 =7x 10 m² , and density of charge carriers of 5 x 102 electrons/m. A current of 6 A flows through the copper wire. Approximate resistivities of copper and aluminum are pcu = 2 x 10 ° Q.m and pẠI = 3 x 10 Q.m respectively. %3D

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...

See similar textbooks

Similar questions

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.
QUESTION 2 A cylindrical nickel wire of radius 2.0 mm and length 1.6 m has a potential difference of 12 volts applied between its ends. If the wire carries a resistive load of 4.0 Q, what is the drift velocity of the conduction electrons in the wire? Assume that the number density of conduction electrons in the wire is 9.12 x 1028 conduction electrons/m3. a. 0.0060 mm/s b. 0.036 mm/s C. 0.046 mm/s d. 0.016 mm/s e. 0.026 mm/s
A copper wire has radius r = 0.314 cm, is 6.00 m long, has resistivity p = 1.72-10-82 m, and carries a current of 0.307 A. The wire has density of charge carriers of 8.50.1028 electrons/m³. a) What is the resistance, R, of the wire? 183.0377*10^-8r Submit Answer Unable to interpret units. Computer reads units as "r". Tries 1/100 Previous Tries b) What is the electric potential difference, AV, across the wire? 56.1926*10^-8V Submit Answer You have entered that answer before Incorrect. Tries 1/100 Previous Tries c) What is the electric field, E, in the wire?
B/A metal object having a length (10 m), cross section area (0.5 mm2), and resistance (0.34 2) is connected to an electric field intensity (0.5 V/m). If the density (concentration) of free electrons equals (8.5*1028 electron/m³ ), Calculate: 1) The object's conductivity. 2) The electron's mobility. 3) The drift velocity. 15 M
mid 9634&page 3 A conductor has a cross-sectional area of 2.3x 10 m and the number of free electrons per unit volume is 8.5x 104 electron/m'. When the current is 10.2 A, find the drift speed (in mm/s) of the electrons. Use the charge of the electron to be 1.6x 10 C. Select one: OA. 0.43 OB. 0.33 OC. 32.61 OD. 0.22 OE. 42.81 page Next page 9:03 P A OD A de ENG 4/30/20 nert 17 V Badapace Nom Sok Y 7 GYH K 4. 15 Enter BYN M 1 Shift End Ead
Two wires have the same resistance and radius. If the wires are made of platinum and copper with resistivities respectively of 11.0 x 10¬8 n · m and 1.70 x 10-8 Q· m, determine the ratio of their lengths. Lpt 6.47 %3D Lcu Check your algebra, you may have inverted the result.
In cylindirical conductor of radius 2 mm and length 2 m, the current density is non-uniform and is given by the relation 3 J = 2 (A/m²). Find the total current. Lütfen birini seçin: O a. 0.067 A O b. 0.045 A c. 0.055 A O d. 0.072 A O e. 0.037A
empt=82392&cmid%3D91618&page%3=2 What is the resistance (in units of 2) of a wire made of a material with a resistivity of 3.2 x 10-82. m, if its length is 65.1 m and its diameter is 0.50 mm? Select one: OA. 10.61 OB. 36.65 OC. 4.10 OD. 2.65 OE. 23.63 Next pag 8:581 ENG
Part A: If there is an annealed copper wire with resistivity 0.172 nano ohm meters and a diameter of 2mm placed in an electric field of 16,000N/C, then how much current will go through the wire? Part B If this wire (the same as in part A) has an electron density of 8.5x10^28 m^-3 then what is the drift velocity of the electrons in this wire? The charge of each electron is, as usual, 1.602x10^-19C.
A piece of wire of length 31.5 cm and cross-sectional area 227.4 cm² is made into a resistor of resistance 713.8 ohm. What is the resistivity of the material used to create the resistor? O a. 5113020.78 ohm-metre O b. 10.04 ohm-metre O c. 5152.96 ohm-metre d. 98.88 ohm-metre Oe. 51.53 ohm-metre Of. 515295.62 ohm-metre O g. 0.10 ohm-metre Oh. 0.99 ohm-metre
1. Consider a cylindrical wire that has conduction electron density 6.0 × 1028 1 ,3 and radius 0.5 mm. An electric field with strength m- 7.5 × 10-4 creates a current of 4.8 x 10! electrons per second. a) What is the average drift speed for an electron? (include units) b) What is the average time in between electron collisions? fs (express your answer in femtoseconds)
فير A conductor has a cross-sectional area of 2.3x 10-6 m and the number of free electrons per unit volume is 8.5x 10- electron/m. When the current is 8.6 A, find the drift speed (in mm/s) of the electrons. Use the charge of the electron to be 1.6x 10-19 C. Select one: OA 0.19 OB. 27.49 CC.036 C0.36.09 CE.027 page