initial commit / add all books

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diff --git a/2129/CH3/EX3.10.19/ex3_10_19.sce b/2129/CH3/EX3.10.19/ex3_10_19.sce
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+// Exa 3.10.19

+clc;

+clear;

+close;

+// Given data

+C_T = 100;// in pF

+C_T=C_T*10^-12;// in F

+epsilon_r = 12;

+epsilon_o = 8.854 * 10^-12;// in F/m

+epsilon = epsilon_r * epsilon_o;

+Rho_p = 5;// in ohm-cm

+Rho_p = Rho_p * 10^-2;// in ohm-m

+V_j = 0.5;// in V

+V = -4.5;// in V

+Mu_p = 500;// in cm^2

+Mu_p = Mu_p * 10^-4;// in m^2

+Sigma_p = 1/Rho_p;// in per ohm-m

+qN_A = Sigma_p/ Mu_p;

+V_B = V_j - V;

+W = sqrt((V_B * 2 * epsilon)/qN_A);// in m

+//C_T = (epsilon * A)/W;

+A = (C_T * W)/ epsilon;// in m

+D = sqrt(A * (4/%pi));// in m

+D = D * 10^3;// in mm

+disp(D,"The diameter in mm is");

+