You will have to provide more information.

Is the solenoid long and slender or short and fat?

Does it have a high permeability core?

Are you looking on-axis?

Where exactly are you referring to when you say "pole"?

Dear TVP45,

Yes sir, if the solenoid is normal as used in a lab commonly.

Here pole I meant by-

As you know arround soft iron a conducting wire is coiled and I refer to the coiled ends as the poles.

Thank U

Thank you for the clarification. Based on my experience, I would call the face of the iron core the pole and I would get a somewhat different answer, so that's why I asked.

So, if the iron extends well past the ends of the coil, the magnetic field in the center of the coil will be very uniform, not perfect but pretty darn close.

Thy honourable might , thanks a lot

For a solenoid wound around ANY non-diamagnetic material, the "Magnetic Field Strength" will be highest at the middle center of the coil.

IF you are asking about the MAGNITUDE of FORCES due to the magnetic fields around a solenoid, the answer is completely dependent on the geometry of the magnetic circuit and the materials used.

Supply a diagram of the device in question and we can tell you where the maximum FORCES will occur.

Which reminds me of this quote: "If it's a good answer you want, there's nothing quite like asking a good question."

The higest differential is at the poles. Each pole would seek the opposite to acctuate the solenoid, however some clever engineer would want to optimise this by shifting the phase a bit, to take advantage of momentum. Not my field realy, but some of our members will rip my butt to shreads and you will get the right answer.

Tippy

I gave you a GA because it is the correct simple answer to the question. Some other posts have interesting and spectacular graphics, but I wanted the future attention of others viewing this to be drawn to your "correct answer" post.

I feel qualified for this judgement because I design solenoid coils for relay products (see guest post #57 "Quick Electromagnet Question) 2/16/09).

You look exactly like:
Blink Guru

Are you twins?

That's definitely worth a GA and a BM.^{_{(Book Mark)}}

Great answer!

I especially like the link, not only for the great simulations, but also because it is (in turn) linked to a couple of my favorites: Lewin's lectures at MIT, and the Hyperphysics site from Georgia State University.

My self satisfy with your answer. thank u

Good Hope,

I just rated this whole discussion 5 stars because of "europium's" post 4 link to Paul Nylander's Website of physics/mathematics/art simulations. What a treat!

Uchiha, (from Uchiwa = Red Fan )

The solenoid dimensions are greater in length than any other dimension.

The greatest magnetic concentration is where the influence of the greatest number of turns is felt. That would be in the center. (the red dashes in the picture) The ends (poles) is where the field is less concentrated.

Jon

If you are talking about a solenoid with a spring-loaded armature which is drawn to a solenoid pole end, then the strength of pull will increase as the armature approaches the pole piece, and it will be maximum when it gets there.

I hadn't thought of that angle.

Here I am, thinking (s)he's asking about electromagnetism (in the 'pure physics' sense), something I'm interested in, rather than thinking (s)he's asking an electro-mechanical question, something maybe (s)he's interested in and actually seeking an answer to.

Moral: You can never question your own assumptions too much, especially the hidden ones. I'm still learning that, even at my tender age ("uh-huh," he mutters, "tender").

I'd give you all my GAs for that, mister, but this here button only lets me give you one. <sigh>

-e

.yerevortnoc rehtona evah eW

"If you can answer I will be extremely pleased"

If you acknowledge that we responded to your question we will be pleased, too.

No, no, no. You gotta gently nudge 'em a bit, like this: "Well, Good Hope, did you win the bet?"

Ok, I'll try.

I'm more the "push hard till one of us breaks" kind.

See ya.

How much you wanna bet he lost the bet?

That's probably why he hasn't been back. Poor losers can't take the heat!

!sreehC

I'm tellin' ya!

How much you wanna bet they're not lettin' him even near a computer so that he can't respond?!

"No cheatin' this time, Red Fan! No asking those CR4 weenies any more questions when we ain't lookin'! Nosirrrreee! You're on yer own now, Bubba!!! We're not even gonna let you thank 'em for helpin' you cheat!!!"

You know how those folks are who live in beautiful villages covered by leaves? They play fair, dadgummit!

He is silent since it was not me who answered him.

Honourable guest, Actually I Have a doubt on strength of magnetic field of solenoid.

If you can answer I will be extremely pleased.

OK OP, I accept the logics of the element and his figure too (though I am not very sure about the figure of the element )