magnetic fields

Thread Starter

imsusieqtoo

Joined Nov 9, 2004
2
I have a ? and I hope someone can help me with the answer.
Strong magnetic fields may best be established in a core made of.
choices are air, steel, nickel, or cobalt. :blink:
 

mozikluv

Joined Jan 22, 2004
1,437
hi susie,

am not sure how to answer your query. each of those mediums have their own strenght and weaknesses depending on the application. there are apllication where you don't need strong magnetic field. :(
 

singhak

Joined Oct 18, 2004
13
hi
the strength of magnetic field depends on the permeability of the material.greater the permeability,greater the strength of the field.it goes in the order
nickel=~cobalt > steel > air
 

Ramasule

Joined Nov 6, 2004
12
Most common core in AC Machines is steel with laminated silcon inbetween sheets.
This is done to reduce eddy currents and give a better hysterises curve (as air does not get magnetically saturated)
 
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