A certain cylindrical wire carries current. We draw a circle of radius r around its central axis in Figure(a) to determine the current I within the circle. Figure(b) shows current i as a function of r. The vertical scale is set by is i, = 4.0 mA, and the horizontal scale is set by r? = 4.0 mm2. What is the magnitude of the current density? (in A/m') (a) 2 (mm²) A E (b) 201 265 398 452 521 i (mA)

A certain cylindrical wire carries current. We draw a circle of radius r around its central axis in Figure(a) to determine the current I within the circle. Figure(b) shows current i as a function of r. The vertical scale is set by is i, = 4.0 mA, and the horizontal scale is set by r? = 4.0 mm2. What is the magnitude of the current density? (in A/m') (a) 2 (mm²) A E (b) 201 265 398 452 521 i (mA)

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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