CHAP. II] MAGNETIC CIRCUIT WITH IRON 23 



1000 2000 3000 Scale"C" 4000 



J<M, 3000 Scale "C" 4000 



100 -,'<*> 800 Scale "B" 400 



10 20 80 Scale "A" 40 



H = AMPERE-TURNS PER CENTIMETER 



Fia. 3. Magnetisation in Htcrl l.itmn.ttiona. 



