Answered: Current flows through a long…

Current flows through a long cylindrical conductor with radius 2R. The magnitude of the current is 21 in the region r< R and I in the region R

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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Concept explainers

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.

Question

Current flows through a long cylindrical conductor with
radius 2R. The magnitude of the current is 21 in the region
r< R and I in the region R <r < 2R. All of the currents
flow in the same direction and are distributed uniformly in
their respective regions. The magnetic field in the region
R<r<2R is given by
μοι
a.)
TTT
b.)
I(r²-R²)
Но
- 31
2πr
+ 12 ) = (²
Но
d.) 2πr
I (²-R²)
3R²

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