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//Example number 8.8, Page number 172
clc;clear;
close;
//Variable declaration
r=0.04; //radius(m)
i=1000*10**-3; //current(mA)
B=10**-3; //magnetic flux density(wb/m**2)
theta=45; //angle(degrees)
//Calculation
A=%pi*r**2; //area(m**2)
mew=i*A; //magnetic dipole moment(amp m**2)
theta=theta*%pi/180;
tow=i*B*cos(theta); //torque(Nm)
//Result
printf("magnetic dipole moment is %.4e Amp-m^2",mew)
printf("\n torque is %.4e Nm",tow)
//answer in the book varies due to rounding off errors
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