Figure represents a section of a circular conductor ofAgnonuniform diameter carnrying a current of 5.00 A. The radius ofcross section A1 is 0.200 cm. What is the magnitude of thecurrent density across A1? Taken as n=3.14A99.5 kA/m?A)196 kA/m?O B)234 kA/m?398 kA/m?D)107 kA/m?E)

Current density is defined as the total amount of electric current travelling in per unit cross…

Answered: Figure represents a section of a…

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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A 14-gauge copper wire has a diameter of 1.508 mm. What magnitude current flows in amperes when the drift velocity is 0.500 mm/s? (The density of free electrons in copper is 8.34 x 1028 e /m³.).) A
The quantity of charge q (in coulombs) that has passed through a surface of area 2.05 cm2 varies with time according to the equation q = 4t3 + 3t + 6, where t is in seconds. (a) What is the instantaneous current through the surface at t = 1.10 s? A (b) What is the value of the current density? KA/m2
An iron wire has a cross-sectional area equal to 5.50 x 10-6 m². Carry out the following steps to determine the drift speed of the conduction electrons in the wire if it carries a current of 12.0 A. (a) How many kilograms are there in 1.00 mole of iron? 0.055 kg/mol (b) Starting with the density of iron and the result of part (a), compute the molar density of iron (the number of moles of iron per cubic meter). 1.43163 X Your response differs significantly from the correct answer. Rework your solution from the beginning and check each step carefully. mol/m³ (c) Calculate the number density of iron atoms using Avogadro's number. atoms/m³ (d) Obtain the number density of conduction electrons given that there are two conduction electrons per iron atom. electrons/m³ (e) Calculate the drift speed of conduction electrons in this wire. m/s Need Help? Read It
8 - The figure in the attachment represents a section a circular conductor of nonuniform diameter carrying a current of 6 A. radius of cross section A1 is 0.5 cm. What is the magnitude of the current density across A,? Ag A1 Figure P27.8 a) O 50,64 kA/m? b) O 56,4 kA/m2 c) O 76,4 kA/m2 d) O 76 A/m² O 56,4 A/m?
The density of free electrons in a cylindrical metal wire is 7x10-8 m. The diameter d= 12.23 mm and carrying a current of I- 6.93 A. the drift velocity (in jum/s) of the electrons in the wire must be (charge of electron =1.6x10"19 C)
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)
We have 5x10¹6 doubly charged positive ions (q=2e) per m³, all moving west with a speed 10³ m/s. In the same region there are 10¹7 electrons per m³ moving northeast with a speed 106 m/s. What are the magnitude and direction of the current density j?
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A beam contains 2.0 × 109 doubly charged positive ions per cubic centimeter, all of which are moving north with a speed of 3.1 × 105 m/s. What is (a) the magnitude of the current density and (b) direction of the current density J→. (c) What additional quantity do you need to calculate the total current i in this ion beam?
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QUESTION 7 A copper wire has a circular cross section with a diameter of 8.11 mm. If the wire carries a current of 1.45 A, find the drift speed (in m/s) of electrons in the wire. (Take the density of mobile charge carriers in copper to be n = 1.10 × 1029 electrons/m³ and charge of electron to be q = 1.61 × 10-19 X C). Area of a circle = pir^2 Submit your answer in exponential form with two decimal places. You are required to show your work in the file you submit.

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Figure represents a section of a circular conductor of Ag nonuniform diameter carrying a current of 5.00 A. The radius of cross section Aj is 0.200 cm. What is the magnitude of the current density across A1? Taken as 7=3.14 A 99.5 kA/m? A) 196 kA/m² 234 kA/m? 398 kA/m? D) 107 kA/m²