A beam contains 7.8 x 106 doubly charged positive ions per cubic centimeter, all of which are moving north with a speed of 7.3 x 105 m/s. What is (a) the magnitude of the current density and (b) direction of the current density J .(c) What additional quantity do you need to calculate the total current i in this ion beam? (a) Number i Units (b)

A beam contains 7.8 x 106 doubly charged positive ions per cubic centimeter, all of which are moving north with a speed of 7.3 x 105 m/s. What is (a) the magnitude of the current density and (b) direction of the current density J .(c) What additional quantity do you need to calculate the total current i in this ion beam? (a) Number i Units (b)

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 15P: If the current carried by a conductor is doubled, what happens to (a) the charge carrier density,...

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