initial commit / add all books

1 files changed, 18 insertions, 0 deletions

diff --git a/2129/CH1/EX1.21.5/ex1_21_5.sce b/2129/CH1/EX1.21.5/ex1_21_5.sce
new file mode 100755
index 000000000..a8bb2d373
--- /dev/null
+++ b/2129/CH1/EX1.21.5/ex1_21_5.sce
@@ -0,0 +1,18 @@
+//Exa 1.21.5

+clc;

+clear;

+close;

+// Given data

+AvagadroNumber = 6.025 * 10^26;// in kg.Mole

+W = 72.59;// atomic weight of Ge

+D = 5.36 * 10^3;//density of Ge in kg/m^3

+Rho = 0.42;// resistivity in Ohm m

+e = 1.6 * 10^-19;// in C

+Sigma = 1/Rho;// in mho/m

+n = (AvagadroNumber/W) * D;// number of Ge atoms present per unit volume

+// Holes per unit volume, H = n*10^-6%

+H= n*10^-8;

+a=H;

+// Formula sigma= a*e*Mu_h

+Mu_h = Sigma/(a * e);// in m^2/V.sec

+disp(Mu_h,"Mobility of holes in m^2/V.sec is");