initial commit / add all books

12 files changed, 166 insertions, 0 deletions

diff --git a/1826/CH7/EX7.1/ex7_1.sce b/1826/CH7/EX7.1/ex7_1.sce
new file mode 100755
index 000000000..3bb375d26
--- /dev/null
+++ b/1826/CH7/EX7.1/ex7_1.sce
@@ -0,0 +1,16 @@
+// Example 7.1, page no-160

+clear

+clc

+rho=1.73*10^-8 //Ohm-m

+z=63.5

+d=8.92*10^3 //kg/m^3

+avg=6.023*10^26

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

+m=9.11*10^-31//Kg

+

+n=avg*d/z

+sig=1/rho

+tau=sig*m/(n*e^2)

+mu=sig/(n*e)

+

+printf("Mobility of electrons in copper is %.2f *10^-3 m^2/V-s",mu*10^3)

diff --git a/1826/CH7/EX7.10/ex7_10.sce b/1826/CH7/EX7.10/ex7_10.sce
new file mode 100755
index 000000000..9ed6cf25d
--- /dev/null
+++ b/1826/CH7/EX7.10/ex7_10.sce
@@ -0,0 +1,19 @@
+// Example 7.10, page no-166

+clear

+clc

+rho=1.6*10^-8 //Ohm-m

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

+fe=5.5*e//J

+avg=6.023*10^23

+d=1.05*10^4//density

+wt=107.9*10^-3//atomic weight

+m=9.1*10^-31//kg

+c=3*10^8//m/s

+sig=1/rho

+n=avg*d/wt

+t=sig*m/(n*e^2)

+printf("\nThe conductivity of silver piece is %.2f*10^7 per Ohm-m\n\nThe relaxation time is %.2f*10^-14 s",sig*10^-7,t*10^14)

+lam=c*t

+vd=sig*100/(n*e)

+printf("\n\nThe driftt velocityy of electrons in the silver piece is %.2f m/s",vd)

+

diff --git a/1826/CH7/EX7.11/ex7_11.sce b/1826/CH7/EX7.11/ex7_11.sce
new file mode 100755
index 000000000..a7121c226
--- /dev/null
+++ b/1826/CH7/EX7.11/ex7_11.sce
@@ -0,0 +1,8 @@
+// Example 7.11, page no-167

+clear

+clc

+r1=1.7*10^-8

+t2=300

+t1=700+273

+r2=r1*sqrt((t1/t2))

+printf("The resistivityy of the copper wire is %.4f*10^-8 Ohm-m",r2*10^8)

diff --git a/1826/CH7/EX7.12/ex7_12.sce b/1826/CH7/EX7.12/ex7_12.sce
new file mode 100755
index 000000000..0b219f1d4
--- /dev/null
+++ b/1826/CH7/EX7.12/ex7_12.sce
@@ -0,0 +1,26 @@
+// Example 7.12, page no-168

+clear

+clc

+

+rho=1.54*10^-8

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

+ef=5.5*e//J

+n=5.8*10^28///per cubic meter

+m=9.1*10^-31//kg

+

+//(i)

+t=m/(rho*n*e^2)

+mu=e*t/m

+printf("\n(i)\nThe relaxation time is %.2f*10^-14 s\nThe mobility of the electrons is %.4f *10^-3 m^2/V-s",t*10^14,mu*10^3)

+

+//(ii)

+vd=e*t*100/m

+printf("\n\n(ii)\nthe drift velocity of elctron is %.5f m/s",vd)

+

+//(iii)

+vf=sqrt(2*ef/m)

+printf("\n\n(iii)\nFermi velocity is %.2f*10^6 m/s",vf*10^-6)

+

+//(iv)

+lam=vf*t

+printf("\n\n(iv)\nThe mean free path is %.3f*10^-8 m",lam*10^8)

diff --git a/1826/CH7/EX7.2/ex7_2.sce b/1826/CH7/EX7.2/ex7_2.sce
new file mode 100755
index 000000000..0fb7b0092
--- /dev/null
+++ b/1826/CH7/EX7.2/ex7_2.sce
@@ -0,0 +1,11 @@
+// Example 7.2, page no-161

+clear

+clc

+r=1.85*10^-10//m

+t=3*10^-14//s

+m=9.11*10^-31//Kg

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

+a=r*(4/sqrt(3))

+ne=2/a^3

+rho=m/(ne*t*e^2)

+printf("Resistivity of copper is %.3f*10^-8 Ohm-m",rho*10^8)

diff --git a/1826/CH7/EX7.3/ex7_3.sce b/1826/CH7/EX7.3/ex7_3.sce
new file mode 100755
index 000000000..f3a37c46f
--- /dev/null
+++ b/1826/CH7/EX7.3/ex7_3.sce
@@ -0,0 +1,11 @@
+// Example 7.3, page no-161

+clear

+clc

+

+r=1.85*10^-10//m

+t=3.1*10^14//s

+m=9.11*10^-31//Kg

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

+n=25.33*10^27

+rho=m/(n*t*e^2)

+printf("The electric Resistivity of sodium at 0°C is %.3f*10^-36 Ohm-m",rho*10^36)

diff --git a/1826/CH7/EX7.4/ex7_4.sce b/1826/CH7/EX7.4/ex7_4.sce
new file mode 100755
index 000000000..974f814fb
--- /dev/null
+++ b/1826/CH7/EX7.4/ex7_4.sce
@@ -0,0 +1,13 @@
+// Example 7.4, page no-162

+clear

+clc

+

+r=1.85*10^-10//m

+t=3.4*10^-14//s

+m=9.11*10^-31//Kg

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

+n=5.8*10^28//per m^3

+rho=m/(n*t*e^2)

+printf("\nThe electric resistivity of material is %.3f*10^-8 Ohm-m",rho*10^8)

+mu=e*t/m

+printf("\nThe mobility of the electron in a metal is %.2f*10^-3 m^2/v-s",mu*10^3)

diff --git a/1826/CH7/EX7.5/ex7_5.sce b/1826/CH7/EX7.5/ex7_5.sce
new file mode 100755
index 000000000..2d184880c
--- /dev/null
+++ b/1826/CH7/EX7.5/ex7_5.sce
@@ -0,0 +1,11 @@
+// Example 7.5, page no-163

+clear

+clc

+

+rho=1.54*10^-8//ohm-m

+E=100//V/m

+n=5.8*10^28//m^-3

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

+mu=1/(rho*n*e)

+vd=mu*E

+printf("\nMobility of electron in silvetr is %.4f*10^-3 m^2/v-s\n\nThe drift velocity of the electron in silver is %.5f m/s ",mu*10^3,vd)

diff --git a/1826/CH7/EX7.6/ex7_6.sce b/1826/CH7/EX7.6/ex7_6.sce
new file mode 100755
index 000000000..235f1aea9
--- /dev/null
+++ b/1826/CH7/EX7.6/ex7_6.sce
@@ -0,0 +1,13 @@
+// Example 7.6, page no-163

+clear

+clc

+

+d=10.5*10^3 //kg/m^3

+sig=6.8*10^7//per Ohm-m

+wt=107.9//kg/m^3

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

+avg=6.023*10^26//atoms/m^3

+

+n=avg*d/wt

+mu=sig/(n*e)

+printf("The mobility of electron is %.3f *10^-2 m^2.V/s",mu*10^2)

diff --git a/1826/CH7/EX7.7/ex7_7.sce b/1826/CH7/EX7.7/ex7_7.sce
new file mode 100755
index 000000000..9389f062a
--- /dev/null
+++ b/1826/CH7/EX7.7/ex7_7.sce
@@ -0,0 +1,8 @@
+// Example 7.7, page no-164

+clear

+clc

+sig=5.87*10^7

+k=390//W/m-k

+T=293

+L=k/(sig*T)

+printf("The Lorentz number is %.3f *10^-8 W.Ohm/K^2",L*10^8)

diff --git a/1826/CH7/EX7.8/ex7_8.sce b/1826/CH7/EX7.8/ex7_8.sce
new file mode 100755
index 000000000..5431f5125
--- /dev/null
+++ b/1826/CH7/EX7.8/ex7_8.sce
@@ -0,0 +1,16 @@
+// Example 7.8, page no-164

+clear

+clc

+

+t=1*10^-14//s

+T=300//K

+m=9.11*10^-31//Kg

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

+n=6*10^28//per m^3

+sig=(n*t*e^2)/m

+printf("\nthe electrical conductivity is %.4f * 10^7/ohm-m",sig*10^-7)

+k=1.38*10^-23

+k1=n*%pi^2*k^2*T*t/(3*m)

+printf("\n\nThermal conductivity is %.2f W/m-k",k1)

+L=k1/(sig*T)

+printf("\n\nthe Lorentz number is %.4f *10^-8 W.Ohm/k^2",L*10^8)

diff --git a/1826/CH7/EX7.9/ex7_9.sce b/1826/CH7/EX7.9/ex7_9.sce
new file mode 100755
index 000000000..c9c07584a
--- /dev/null
+++ b/1826/CH7/EX7.9/ex7_9.sce
@@ -0,0 +1,14 @@
+// Example 7.9, page no-165

+clear

+clc

+

+d=8900 //kg/m^3

+cu=63.5

+t=10^-14 //s

+avg=6.023*10^23

+n=avg*d*1000/cu

+m=9.1*10^-31//kg

+e=1.6*10^-19

+

+sig=(n*t*e^2)/m

+printf("The electrical conductivity is %.3f *10^7 /Ohm-m",sig*10^-7)