Insights Blog
-- Browse All Articles --
Physics Articles
Physics Tutorials
Physics Guides
Physics FAQ
Math Articles
Math Tutorials
Math Guides
Math FAQ
Education Articles
Education Guides
Bio/Chem Articles
Technology Guides
Computer Science Tutorials
Forums
Trending
Featured Threads
Log in
Register
What's new
Search
Search
Search titles only
By:
Menu
Log in
Register
Navigation
More options
Contact us
Close Menu
JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding.
You are using an out of date browser. It may not display this or other websites correctly.
You should upgrade or use an
alternative browser
.
Forums
Physics
Classical Physics
Electromagnetism
Magnetic field outside a solenoid
Reply to thread
Message
[QUOTE="jtbell, post: 6265644, member: 20524"] The example shown by the OP is from Griffiths (3rd ed.) Chapter 5, which doesn't discuss magnetization at all. He discusses bound currents and magnetization in Chapter 6, where he leaves the uniformly magnetized (solid) cylinder as an exercise (Problem 6.7). Therefore introducing magnetization here is "jumping the gun", so to speak. In introductory textbooks, one normally uses simplified idealized situations to introduce applications of basic laws such as Ampère's Law. The ##z##-component of the current does produce a ##\phi##-component of the magnetic field. It should be an easy exercise to calculate the magnetic field produced by a very long ("infinite") cylindrical shell of current in the ##z##-direction. Then combine it with the field produced by a pure "##\phi##-current", in some proportion that depends on the angle that the solenoid wires make with the ##\phi##-direction, which in turn depends on the radius of the solenoid and the number of turns of wire per unit length along the solenoid. I'm a bit surprised that Griffiths apparently doesn't discuss this later, or give this as an exercise. [/QUOTE]
Insert quotes…
Post reply
Forums
Physics
Classical Physics
Electromagnetism
Magnetic field outside a solenoid
Back
Top