A beam contains 8.1 × 107 doubly charged positive ions per cubic centimeter, all of which are moving north with a speed of 2.3 × 105m/s. What is (a) the magnitude of the current density and (b) direction of the current density J. (c) What additional quantity do youneed to calculate the total current i in this ion beam?(a) Number(b)(c)>Units

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Answered: A beam contains 8.1 × 107 doubly…

University Physics Volume 2

18th Edition

ISBN:9781938168161

Author:OpenStax

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Chapter9: Current And Resistance

Section: Chapter Questions

Problem 28P: An aluminum wire 1.628 mm in diameter (14-gauge) carries a current of 3.00 amps, (a) What is the...

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