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// Find the current required to develop a flux of 1.6 mWb
clc;
clear;
B=1;
H=900;
m0=4*%pi*(10^-7);
mr=B/(m0*H);
//lengths
lg=1*(10^-3);// Air gap
lc=24*(10^-2);// Central Limb
la=60*(10^-2);// Side limbs
//area
A=4*4*(10^-4);
phi=1.6*(10^-3); // Flux
//Reluctances
Ra=lg/(m0*A); // Air gap
Rc=lc/(m0*mr*A);// Central limb
Rs=la/(m0*mr*A);// One side limbs
//mmf
AT1=(Ra+Rc)*phi; // Central limb
AT2=Rs*phi/2;// One of the side limb
AT=AT1+AT2; // Total
N=680;//Turns
I=AT/N;
printf('The current the current required to produce a total flux of 1.6 mWb = %g A\n',I)
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