Physics for Scientists and Engineers with Modern Physics, Technology Update
Physics for Scientists and Engineers with Modern Physics, Technology Update
9th Edition
ISBN: 9781305401969
Author: SERWAY, Raymond A.; Jewett, John W.
Publisher: Cengage Learning
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Chapter 41, Problem 8OQ
To determine

The change that has to be made to increase the current effectively.

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In a certain region of space there are electrons moving randomly. In any 1 µs time interval, the probability of finding an electron in a subregion of volume V=10-15 m³ is 0.27. What volumetric charge density should be assigned to that sub-region for that interval?
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Physics for Scientists and Engineers with Modern Physics, Technology Update

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