Electromagnetism question Answered
Hi I just saw something weird, it's not an exercise or a problem but I still have a question :
Let's say we have 2 electromagnets of unequal strengths X and X+Y; between them we have a ferromagnetic bar
Let's say one has south polarity and the other one north
if we change which one is stronger ex 1st is X, 2nd is X+Y than a moment after 1st is X+Y and 2nd is X
the bar will have the polarity of the stronger one for a moment, right?
ex for a moment the electromagnet with the south pole is stronger X + Y = the bar will become south pole
than we return it to its normal strength X and make the north pole electromagnet stronger X+ Y= the bar will become north pole, right?
How will such variations of the strength of the magnetic field on 1 side affect the entire device, will only the bar change its polarity and it will stop somewhere on the border of the second magnet or will the second electromagnet change it's polarity too if the first one's is very strong?
(just wondering) If we fix a coil on the ferromagnetic bar will such variations in the magnetic polarities of the bar induce current in it and how much, as much as we used to produce the fields of both electromagnets or only for the field of the stronger one, or only the difference between 2?
and the last question in the terms of relation between the strengths of both electromagnets (let's say in %) how much Y should be to change the polarity of the bar without affecting the polarity of the second electromagnet?
Thank you all in advance for your interest, assistance and time