**Text:**"How long does it take electrons to get from a car battery to the starting motor? Assume the current is 320 A and the electrons travel through a copper wire with cross-sectional area 0.120 cm² and length 0.840 m. The number of charge carriers per unit volume is 8.49 × 10²⁸ m⁻³."**Graph/Diagram Description:**There is an input field accompanied by a dropdown menu:- **Number:** 428.5- **Unit:** m/s

Answered: Image /qna-images/answer/95454f86-936c-4e91-86f0-0144f4ef387c.jpg

How long does it take electrons to get from a car battery to the starting motor? Assume the current is 320A and the elect travel through a copper wire with cross-sectional area 0.120 cm2 and length 0.840 m. The number of charge carriers per u volume is 8.49 x 1028 m3. Number i 428.5 Unit m/s

How long does it take electrons to get from a car battery to the starting motor? Assume the current is 320A and the elect travel through a copper wire with cross-sectional area 0.120 cm2 and length 0.840 m. The number of charge carriers per u volume is 8.49 x 1028 m3. Number i 428.5 Unit m/s

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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Concept explainers

Microscopic view of current

In physics, the term current is expressed as the rate of flow of electric charges across the area per unit time (I=q/t). It propagates along in the direction of the motion of positive charges. When the current is caused by the motion of electrons, the direction of the current is opposite to the flow.

Question

**Text:**

"How long does it take electrons to get from a car battery to the starting motor? Assume the current is 320 A and the electrons travel through a copper wire with cross-sectional area 0.120 cm² and length 0.840 m. The number of charge carriers per unit volume is 8.49 × 10²⁸ m⁻³."

**Graph/Diagram Description:**

There is an input field accompanied by a dropdown menu:

- **Number:** 428.5
- **Unit:** m/s

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