- #1
dmriser
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If we consider the common electromagnet that is made by passing current through a wire coiled around an iron core, I wonder what effect produces more magnetic field:
1. The field produced outside the solenoid due to the current in the wire
2. For this effect I don't insist that the object is iron or even ferromagnetic, just capable of having a net magnetism induced (ie: electron spin aligned along the axis of the solenoid in the direction of the field, paramagnetism i believe). This alignment produces an external magnetic field.
My question is which effect dominates and provides the larger contribution to the total magnetic field outside?
I hope the question is clear.
Thank you,
David
1. The field produced outside the solenoid due to the current in the wire
2. For this effect I don't insist that the object is iron or even ferromagnetic, just capable of having a net magnetism induced (ie: electron spin aligned along the axis of the solenoid in the direction of the field, paramagnetism i believe). This alignment produces an external magnetic field.
My question is which effect dominates and provides the larger contribution to the total magnetic field outside?
I hope the question is clear.
Thank you,
David