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diff --git a/3673/CH4/EX4.a.4/Example_a_4_4.sce b/3673/CH4/EX4.a.4/Example_a_4_4.sce
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index 000000000..d8cc09b0e
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+++ b/3673/CH4/EX4.a.4/Example_a_4_4.sce
@@ -0,0 +1,15 @@
+//Example_a_4_4 page no:177
+clc;
+Irms=20;
+f=50;
+Im=sqrt(2)*Irms;
+//at t=0.0025s
+t1=0.0025;
+i_t1=Im*cos(2*%pi*f*t1);
+disp(i_t1,"the current at 0.0025s is (in A)");
+//at t=0.0125s
+t2=0.0125;
+i_t2=Im*cos(2*%pi*f*t2);
+disp(i_t2,"the current at 0.0125s is (in A)");
+t=acos(14.14/28.28)/(2*f*%pi);
+disp(t,"the time at which instantaneous current becomes 14.14 A is (in s)");