1 files changed, 20 insertions, 0 deletions
diff --git a/1730/CH3/EX3.7/Exa3_7.sce b/1730/CH3/EX3.7/Exa3_7.sce
new file mode 100755
index 000000000..e37365b60
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+++ b/1730/CH3/EX3.7/Exa3_7.sce
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+//Exa3.7
+clc;
+clear;
+close;
+// given data
+rho_i=0.47;// in ohm-meter
+sigma_i=1/rho_i;
+miu_e=0.39;// in m^2/V-s
+miu_h=0.19;// in m^2/V-s
+e=1.6*10^-19;// in C
+
+// since sigma_i=n_i*e*(miu_e+miu_h);
+n_i=sigma_i/(e*(miu_e+miu_h));
+// so Density of electrons = Intrinsic Concentration,n_i
+disp("Density of electons is :"+string(n_i)+" /m^3");
+E=10^4;// in V/m
+v_n=miu_e*E;
+disp("Drift velocity of electrons is : "+string(v_n)+" m/s");
+v_h=miu_h*E;
+disp("Drift velocity of holes is : "+string(v_h)+" m/s");
+\ No newline at end of file