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diff --git a/3673/CH8/EX8.a.13/Example_a_8_13.sce b/3673/CH8/EX8.a.13/Example_a_8_13.sce
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+//Example_a_8_13 page no:333
+clc;
+V_mag=200;
+V_ang=0;
+X1=25;
+I2=200/50;
+//when R1=10;
+R1=10;
+I1_mag=V_mag/sqrt(R1^2+X1^2);
+I1_ang=0-atand(X1/R1);
+I1_real=I1_mag*cosd(I1_ang);
+I1_imag=I1_mag*sind(I1_ang);
+I1=I1_real+(%i*I1_imag);
+Imax=I1+I2;
+Imax_mag=sqrt(real(Imax)^2+imag(Imax)^2);
+Imax_ang=atand(imag(Imax)/real(Imax));
+disp(Imax_mag,"the magnitude of maximum current is (in A)");
+disp(Imax_ang,"the angle of maximum current is (in degree)");
+//when R1=50;
+R1=50;
+I1_mag=V_mag/sqrt(R1^2+X1^2);
+I1_ang=0-atand(X1/R1);
+I1_real=I1_mag*cosd(I1_ang);
+I1_imag=I1_mag*sind(I1_ang);
+I1=I1_real+(%i*I1_imag);
+Imax=I1+I2;
+Imax_mag=sqrt(real(Imax)^2+imag(Imax)^2);
+Imax_ang=atand(imag(Imax)/real(Imax));
+disp(Imax_mag,"the magnitude of minimum current is (in A)");
+disp(Imax_ang,"the angle of minimum current is (in degree)");