Below you see two long solenoids, where the smaller one is totally surrounded by the large one. They both carry the same current I, but in opposite directions. The inner solenoid (rac a) has N1 turns per unit length, and the outer one (radius b) has N2. R2

Below you see two long solenoids, where the smaller one is totally surrounded by the large one. They both carry the same current I, but in opposite directions. The inner solenoid (rac a) has N1 turns per unit length, and the outer one (radius b) has N2. R2

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

Chapter22: Magnetic Forces And Magnetic Fields

Section: Chapter Questions

Problem 16OQ: Solenoid A has length L and N turns, solenoid B has length 2L and N turns, and solenoid C has length...

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Concept explainers

Ferromagnetism

Ferromagnetism is a mechanism by which some materials show magnetic properties. Iron and magnetite, an oxide of iron, are two naturally occurring materials that show the property of ferromagnetism. The word ferromagnetism is derived from the Latin name of iron, "Ferrum" as it was the first observed material to show such property. The property of ferromagnetism is shown by only a few substances such as iron, nickel, cobalt, and their alloys. Some transition metals and alloys of rare-earth metals also show ferromagnetism.

Question

Below you see two long solenoids, where the smaller one is totally surrounded by the larger
one. They both carry the same current I, but in opposite directions. The inner solenoid (radius
a) has N1 turns per unit length, and the outer one (radius b) has N2.
R2
R
Find B in each of the three regions:
(a) inside the inner solenoid (0,0,N1-N2)
V =H0I......
(b) between them (0,0,(N1-N2))
=HoI......
(c) outside both N1+N2
FH0I.....
Remember to write vectors by indicating their components in the form (a,b,c).
>

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