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diff --git a/2492/CH4/EX4.17/ex4_17.sce b/2492/CH4/EX4.17/ex4_17.sce
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+// Exa 4.17
+format('v',7)
+clc;
+clear;
+close;
+// Given data
+I_CBO = 3;//in µA
+I_CBO= I_CBO*10^-3;// in mA 
+I_C= 15;// in mA
+// But it is given that I_C= 99.5% of I_E, SO
+I_E= I_C/99.5*100;// in mA
+alpha_dc= I_C/I_E;
+disp(alpha_dc,"The value of alpha_dc is : ")
+disp(I_E,"The value of I_E in mA is : ")