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clear;
clc;
D=6;
r=.015;
e=8.85*10^(-12);
a=complex(0.5,-0.866);
ca=log(r/(2*D))-(log(D/(2*r))*a);
cb=(log((D^2)/(r^2))*log(r/(2*D)))-(log((2*D)/r)*log(D/(2*r)));
Cyr= (2*%pi*e*(10^9)*ca)/cb;
mprintf(" capacitance in microF/Km is %.3f %.3fi\n",real(Cyr),imag(Cyr));
I=%i*2*%pi*50*Cyr*110000*10^-6;
mprintf(" Current is %.3f+%.3fi A",real(I),imag(I));
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