The electron beam emerging from an accelerator has a circular cross section of radius 1 mm. If the beam current is 8 μA, and the speed of the electrons is 3*108 m/s, then the number density of the electrons (in 1010 m-3) in the beam is:

The electron beam emerging from an accelerator has a circular cross section of radius 1 mm. If the beam current is 8 μA, and the speed of the electrons is 3*108 m/s, then the number density of the electrons (in 1010 m-3) in the beam is:

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 5P

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The electron beam emerging from an accelerator has a circular cross section of radius 1 mm. If the beam current is 8 μA, and the speed of the electrons is 3*10⁸ m/s, then the number density of the electrons (in 10¹⁰ m^-3) in the beam is:

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