Electromagnet Vs Solenoid in strength?

Question

oneowone · Answer

If you have the two, and each has the same size, and same electrical input, and number of turns, but one has an iron core and the other dosen't, Will they be equal? Or one stronger than the other?

oneowone · Answer

I assume the electromagnet is stronger since the core amplifies the magnetic field hence the force generated by it is greater than the Solenoid.

oneowone · Answer

@electrokid  @Mashy  What do you think?

anonymous · Answer

yes. having a ferromagnetic material as the core will increase the B

oneowone · Answer

Will the ferromagnetic material be magnetized and have poles? Based on the orientation of the electromagnet?

anonymous · Answer

the entire setup is an electromagnet; the core is a part of it.

anonymous · Answer

due to the "B" field generated by the current, the magnetic domains of the electromagnet will orient in the direction so that least energy is lost and thy seem to have got magnetized.
once the external field is removed (i.e., curent in the coil is stopped), the core will try to loose its magnetization

oneowone · Answer

|dw:1365017689206:dw|

The current is now flowing around the iron core, and the electromagnet is suppose to repel a magnet that is near by.
Is I push the magnet closer to the electromagnet will it be attracted by the iron core? Or the iron core is magnetized and is repelling the magnet?