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//Example number 10.6, Page number 226
clc;clear;
close;
//Variable declaration
T=5; //temperature(K)
Tc=8; //critical temperature(K)
H0=5*10**4; //critical magnetic field(A/m)
r=1.5*10**-3; //radius(m)
//Calculation
Hc=H0*(1-(T/Tc)**2); //critical field(A/m)
Ic=2*%pi*r*Hc; //critical current(amp)
//Result
printf("critical field is %.4e A/m",Hc)
printf("\n critical current is %.3f A",Ic)
//answer in the book varies due to rounding off errors
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