30. A high-energy proton accelerator produces a proton beam with a radius of r = 0.90 mm. The beam current is I = 9.00 µA and is constant. The charge density of the beam is n = 6.00 x 10" protons per cubic meter. (a) What is the current density of the beam? (b) What is the drift velocity of the beam? (c) How much time does it take for 1.00 × 1010 protons to be emitted by the accelerator?

30. A high-energy proton accelerator produces a proton beam with a radius of r = 0.90 mm. The beam current is I = 9.00 µA and is constant. The charge density of the beam is n = 6.00 x 10" protons per cubic meter. (a) What is the current density of the beam? (b) What is the drift velocity of the beam? (c) How much time does it take for 1.00 × 1010 protons to be emitted by the accelerator?

Physics for Scientists and Engineers, Technology Update (No access codes included)

9th Edition

ISBN:9781305116399

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter27: Current And Resistance

Section: Chapter Questions

Problem 27.22P: If the current carried by a conductor is doubled, what happens to (a) the charge carrier density,...

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