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:

University Physics Volume 2

18th Edition

ISBN:9781938168161

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Chapter9: Current And Resistance

Section: Chapter Questions

Problem 30P: A high-energy proton accelerator produces a proton beam with a radius of r - 0,90 mm. The beam...

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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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