How long does it take electrons to get from a car battery to the starting motor? Assume the current is 320A and the electronstravel through a copper wire with cross-sectional area 0.120 cm2 and length 0.840 m. The number of charge carriers per unitvolume is 8.49 x 1028 m3.Numberi428.5Unitm/s

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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

Principles of Physics: A Calculus-Based Text

5th Edition

ISBN:9781133104261

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter21: Current And Direct Current Circuits

Section: Chapter Questions

Problem 8P: A 0.900-V potential difference is maintained across a 1.50-m length of tungsten wire that has a...

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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

How long does it take electrons to get from a car battery to the starting motor? Assume the current is 320A 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 x 1028 m3.
Number
i
428.5
Unit
m/s

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