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

---
 284/CH4/EX4.4/ex_4.sce | 11 +++++++++++
 1 file changed, 11 insertions(+)
 create mode 100755 284/CH4/EX4.4/ex_4.sce

(limited to '284/CH4/EX4.4')

diff --git a/284/CH4/EX4.4/ex_4.sce b/284/CH4/EX4.4/ex_4.sce
new file mode 100755
index 000000000..f040adcf5
--- /dev/null
+++ b/284/CH4/EX4.4/ex_4.sce
@@ -0,0 +1,11 @@
+// Chapter 4_Carrier Transport Phenomenon
+//Caption_Carrier diffusion
+//Ex_4//page 150
+T=300
+d=0.10   //distance in cm over which concentration varies
+Dn=225    //diffusion coefficient
+e=1.6*(10^-19)
+delN=1*(10^18)-7*(10^17)
+J=e*Dn*(delN/d)
+printf('The diffusion current density is %1.2fd A/cm^3',J)
+
-- 
cgit