(5) Current is flowing through a cylindrical copper wire with radius 6.33mm and length 92.1cm. This wire is hooked up to two capacitors in series C1 = 9.42µF and C2 = 8.11µF. The capacitors both have cross sectional areas of A = 179cm2. (a) At a given moment in time, the current is I = 77.97A and the drift velocity of the electrons is va = 45.6µm/s. What is the number density of electrons in this wire? (b) At a given moment in time, the charge on capacitor 2 is 62.6µC. What is the total change in potential across both capacitors combined? (c) At the moment described in part (b), what is the energy stored in capacitor 2? %3D

(5) Current is flowing through a cylindrical copper wire with radius 6.33mm and length 92.1cm. This wire is hooked up to two capacitors in series C1 = 9.42µF and C2 = 8.11µF. The capacitors both have cross sectional areas of A = 179cm2. (a) At a given moment in time, the current is I = 77.97A and the drift velocity of the electrons is va = 45.6µm/s. What is the number density of electrons in this wire? (b) At a given moment in time, the charge on capacitor 2 is 62.6µC. What is the total change in potential across both capacitors combined? (c) At the moment described in part (b), what is the energy stored in capacitor 2? %3D

University Physics Volume 2

18th Edition

ISBN:9781938168161

Author:OpenStax

Publisher:OpenStax

Chapter16: Electromagnetic Waves

Section: Chapter Questions

Problem 39P: The voltage across a parallel-plate capacitor with area A=800cm2 and separation d = 2 mm varies...

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(5) Current is flowing through a cylindrical copper wire with radius 6.33mm and length 92.1cm. This wire is hooked up to two capacitors in series C1 The capacitors both have cross sectional areas of A = 179cm2. (a) At a given moment in time, the current is I electrons is vd = 9.42µF and C2 = 8.11µF. = 77.97A and the drift velocity of the 45.6µm/s. What is the number density of electrons in this wire? (b) At a given moment in time, the charge on capacitor 2 is 62.6µC. What is the total change in potential across both capacitors combined? | (c) At the moment described in part (b), what is the energy stored in capacitor 2? (d) At the moment described in part (b), what is the energy density of the electric field in capacitor 2? :
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