From b1f5c3f8d6671b4331cef1dcebdf63b7a43a3a2b Mon Sep 17 00:00:00 2001
From: priyanka
Date: Wed, 24 Jun 2015 15:03:17 +0530
Subject: initial commit / add all books

---
 2720/CH3/EX3.21.4/ex3_21_4.sce | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)
 create mode 100755 2720/CH3/EX3.21.4/ex3_21_4.sce

(limited to '2720/CH3/EX3.21.4')

diff --git a/2720/CH3/EX3.21.4/ex3_21_4.sce b/2720/CH3/EX3.21.4/ex3_21_4.sce
new file mode 100755
index 000000000..a82976932
--- /dev/null
+++ b/2720/CH3/EX3.21.4/ex3_21_4.sce
@@ -0,0 +1,16 @@
+// Exa 3.21.4
+clc;
+clear;
+close;
+format('e',9)
+// Given data
+K = 1.38 * 10^-23;// in J/K
+T = 27;// in degree
+T = T + 273;// in K
+e = 1.6 * 10^-19;// in C
+Mu_e = 0.17;// in m^2/v-s
+Mu_e1 = 0.025;// in m^2/v-s
+D_n = ((K * T)/e) * Mu_e;// in m^2/s
+disp(D_n,"The diffusion coefficient of electrons in m^2/s is");
+D_p = ((K * T)/e) * Mu_e1;// in m^2/s
+disp(D_p,"The diffusion coefficient of  holes in m^2/s is ");
-- 
cgit