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+
+//calculate the reluctance and current
+A=5e-4
+N=250
+l=50e-2
+F=700e-6
+u=380
+S=l/(4*%pi*10^-7*A*u)
+I=F*S/N
+disp('current='+string(I)+'amps' , 'reluctance ='+string(S)+'AT/Wb')