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diff --git a/1697/CH1/EX1.9/Exa1_9.sce b/1697/CH1/EX1.9/Exa1_9.sce
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+//Exa 1.9
+clc;
+clear;
+close;
+//given data :
+r=100;//in Km
+W=100;//in KW
+Erms=sqrt(90*W*1000)/(r*1000);//in V/m
+disp(Erms,"Strength of Electric Field in V/m : ");
+\ No newline at end of file