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authorpriyanka2015-06-24 15:03:17 +0530
committerpriyanka2015-06-24 15:03:17 +0530
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treeab291cffc65280e58ac82470ba63fbcca7805165 /1664/CH12
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-rwxr-xr-x1664/CH12/EX12.1/Ex12_1.sce10
-rwxr-xr-x1664/CH12/EX12.2/Ex12_2.sce12
-rwxr-xr-x1664/CH12/EX12.3/Ex12_3.sce10
-rwxr-xr-x1664/CH12/EX12.4/Ex12_4.sce17
-rwxr-xr-x1664/CH12/EX12.5/Ex12_5.sce11
-rwxr-xr-x1664/CH12/EX12.6/Ex12_6.sce12
6 files changed, 72 insertions, 0 deletions
diff --git a/1664/CH12/EX12.1/Ex12_1.sce b/1664/CH12/EX12.1/Ex12_1.sce
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+
+//Example NO.12.1
+//Page No.356
+//To find critical field.
+clc;clear;
+Tc = 3.7;//Critical temperature of tin -[K].
+Ho = 0.0306;//Magnetic field -[T].
+T = 2;//Temperature -[K].
+Hc = Ho*(1-((T^(2))/(Tc^(2))));//Critical magnetic field
+printf("\nCritical field at 2K is %.4f T",Hc);
diff --git a/1664/CH12/EX12.2/Ex12_2.sce b/1664/CH12/EX12.2/Ex12_2.sce
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+
+
+//Example NO.12.2
+//Page No.356
+//To find critical field.
+clc;clear;
+Tc = 7.26;//Critical temperature of lead -[K].
+Ho = 6.4*10^3;//Magnetic field -[A/m^3].
+T = 5;//Temperature -[K].
+Hc = Ho*(1-((T^(2))/(Tc^(2))));//Critical magnetic field
+printf("\nCritical field at 5K is %.2f T",Hc);
+
diff --git a/1664/CH12/EX12.3/Ex12_3.sce b/1664/CH12/EX12.3/Ex12_3.sce
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+
+//Example NO.12.3
+//Page No.357
+//To find the value of Tc.
+clc;clear;
+M1 = (199.5^(1/2));//Atomic mass.
+M2 = (203.4^(1/2));//Atomic mass.
+Tc1 = (4.185);//Critical temperature of Hg -[K].
+Tc = (Tc1*M1/M2);//Critical temperature
+printf("\nCritical temperature of Hg with atomic mass,203.4 is %.5f K",Tc);
diff --git a/1664/CH12/EX12.4/Ex12_4.sce b/1664/CH12/EX12.4/Ex12_4.sce
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index 000000000..d247dffb8
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+
+//Example NO.12.4
+//Page No.357
+//To find critical current density.
+clc;clear;
+D=1*10^(-3);//Diameter of the wire -[m].
+Tc = 7.18;//Critical temperature -[K].
+Ho = 6.5*10^4;//Critical field -[A/m].
+T = 4.2;//Temperature -[K].
+R = 0.5*10^-3;//Radius.
+I = 134.33;//Current.
+Hc = Ho*(1-((T^(2))/(Tc^(2))));
+printf("\nCritical magnetic field is %3.3e A/m",Hc);
+ic = (2*%pi*R*Hc);
+printf("\nCritical current is %.2f A",ic);
+J = (I/(%pi*R^2));
+printf("\nCritical current density is %3.3e A/m^2",J);
diff --git a/1664/CH12/EX12.5/Ex12_5.sce b/1664/CH12/EX12.5/Ex12_5.sce
new file mode 100755
index 000000000..cc2f99b27
--- /dev/null
+++ b/1664/CH12/EX12.5/Ex12_5.sce
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+
+//Example NO.12.5
+//Page No.358
+//To find frequency.
+clc;clear;
+e = (1.6*10^-19);//value of electron.
+V = (6*10^-6);//Voltage applied across the junction -[V]
+h = (6.626*10^-34);//Planck's constant
+v = ((2*e*V)/h);//Frequency of ac signal
+printf("\nFrequency of ac signal is %3.3e Hz",v);
+
diff --git a/1664/CH12/EX12.6/Ex12_6.sce b/1664/CH12/EX12.6/Ex12_6.sce
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+
+//Example NO.12.6
+//Page No.358
+//To find band gap of superconducting lead
+clc;clear;
+KB = (1.38*10^-23);//Boltzman's constant.
+Tc = (7.19);//Critical temperature of lead -[K].
+Eg = (3.5*KB*Tc);//Energy gap of semiconductor.
+printf("\nBand gap of superconducting lead is %3.3e J",Eg);
+Eg = (Eg/(1.6*10^-19*10^(-3)));
+printf("\nBand gap of superconducting lead is %.2f meV",Eg);
+