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diff --git a/608/CH43/EX43.03/43_03.sce b/608/CH43/EX43.03/43_03.sce
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+//Problem 43.03: Two coils have self inductances of 250 mH and 400 mH respectively. Determine the magnetic coupling coefficient of the pair of coils if their mutual inductance is 80 mH.
+
+//initializing the variables:
+La = 250E-3; // in Henry
+Lb = 400E-3; // in Henry
+M = 80E-3; // in Henry
+
+//calculation:
+//coupling coefficient,
+k = M/(La*Lb)^0.5
+
+printf("\n\n Result \n\n")
+printf("\n coupling coefficient, is %.3f",k)
+\ No newline at end of file