A cylindrical, non-ohmic, uniform conductor is placed in a uniform electric field that points from bottom to top along the axis of the conductor, which is aligned with the z-axis. Which of the following statements is correct (select all that apply)? The current density is proportional to r (the radial distance from the axis) O The current density is proportional to the cube of the conductor's radius O The current density is proportional to the conductivity O The current density is inversely proportional to the cross-sectional area of the conductor

A cylindrical, non-ohmic, uniform conductor is placed in a uniform electric field that points from bottom to top along the axis of the conductor, which is aligned with the z-axis. Which of the following statements is correct (select all that apply)? The current density is proportional to r (the radial distance from the axis) O The current density is proportional to the cube of the conductor's radius O The current density is proportional to the conductivity O The current density is inversely proportional to the cross-sectional area of the conductor

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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Microscopic view of current

In physics, the term current is expressed as the rate of flow of electric charges across the area per unit time (I=q/t). It propagates along in the direction of the motion of positive charges. When the current is caused by the motion of electrons, the direction of the current is opposite to the flow.

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