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

---
 2243/CH11/EX11.14/Ex11_14.sce  | 17 +++++++++++++++++
 2243/CH11/EX11.14/Res11_14.txt |  1 +
 2 files changed, 18 insertions(+)
 create mode 100755 2243/CH11/EX11.14/Ex11_14.sce
 create mode 100755 2243/CH11/EX11.14/Res11_14.txt

(limited to '2243/CH11/EX11.14')

diff --git a/2243/CH11/EX11.14/Ex11_14.sce b/2243/CH11/EX11.14/Ex11_14.sce
new file mode 100755
index 000000000..5a47365e0
--- /dev/null
+++ b/2243/CH11/EX11.14/Ex11_14.sce
@@ -0,0 +1,17 @@
+clc();
+clear;
+//Given :
+sigma = 4*10^-4; // conductivity at room temperature in ohm^-1 m^-1
+M = 28.1; // atomic weight in kg/kmole
+d = 2330; // density in kg/m^3
+dop = 10^8 ;// doping per 10^8 silicon atoms
+e = 1.6*10^-19; // charge of an electron in C
+mue = 0.135; // mobility of free electrons for silicon in m^2/Vs
+Na = 6.023*10^26 ; // Avagadro's constant in atoms/kmole
+N = (d*Na)/M; //atoms/m^3
+Nd = N/dop; // per m^3
+n = Nd; // electron concentration / m^3
+sigma1 = n*e*mue; // conductivity in ohm^-1 m^-1
+t = sigma1/sigma; // number of times the conductivity  increased
+printf("Conductivity increased %d times .",t);
+//Result obtained differs from that in textbook, because approximate value for sigma1 was considered.
diff --git a/2243/CH11/EX11.14/Res11_14.txt b/2243/CH11/EX11.14/Res11_14.txt
new file mode 100755
index 000000000..d9f746e80
--- /dev/null
+++ b/2243/CH11/EX11.14/Res11_14.txt
@@ -0,0 +1 @@
+ Conductivity increased 26968 times .
\ No newline at end of file
-- 
cgit