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+//Exa 1.13
+clc;
+clear;
+close;
+//given data :
+r=1;//in Km
+r=1*10^3;//in m
+l=1;//in m
+Irms=10;//in A
+f=5;//in MHz
+c=3*10^8;//speed of light i m/s
+lambda=c/(f*10^6);//in m
+le=2*l/%pi;//in m
+Erms=120*%pi*le*Irms/(lambda*r);//in V/m
+disp(Erms,"Field strength at 10Km distace in V/m: ");
+//Note : Answer in the book is wrong. Mistake during value putting.
+\ No newline at end of file