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| author | priyanka | 2015-06-24 15:03:17 +0530 |
|---|---|---|
| committer | priyanka | 2015-06-24 15:03:17 +0530 |
| commit | b1f5c3f8d6671b4331cef1dcebdf63b7a43a3a2b (patch) | |
| tree | ab291cffc65280e58ac82470ba63fbcca7805165 /1952/CH12/EX12.20 | |
| download | Scilab-TBC-Uploads-b1f5c3f8d6671b4331cef1dcebdf63b7a43a3a2b.tar.gz Scilab-TBC-Uploads-b1f5c3f8d6671b4331cef1dcebdf63b7a43a3a2b.tar.bz2 Scilab-TBC-Uploads-b1f5c3f8d6671b4331cef1dcebdf63b7a43a3a2b.zip | |
initial commit / add all books
Diffstat (limited to '1952/CH12/EX12.20')
| -rwxr-xr-x | 1952/CH12/EX12.20/Ex20.sce | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/1952/CH12/EX12.20/Ex20.sce b/1952/CH12/EX12.20/Ex20.sce new file mode 100755 index 000000000..9f016011c --- /dev/null +++ b/1952/CH12/EX12.20/Ex20.sce @@ -0,0 +1,23 @@ +// Additional solved examples , Example 20 , pg 339
+rho=1.8*10^-8 //resistivity (in ohm*m)
+Ef=4.8 //Fermi energy (in eV)
+E=100 //electric field intensity (in V/m)
+n=6.2*10^28 //concentration of electrons (in atoms/m^3)
+e=1.6*10^-19 //charge in electron (in C)
+Me=9.11*10^-31 //mass of electron (in Kg)
+T=Me/(rho*n*e^2) //relaxation time
+Un=(e*T)/Me //mobility of electron
+Vd=(e*T*E)/Me //drift velocity
+Vf=sqrt((2*Ef*e)/Me) //Fermi velocity
+lam_m=Vf*T //mean free path
+
+printf("Relaxation time of electron (in s)")
+disp(T)
+printf("Mobility of electron (in m^2/(V*s))")
+disp(Un)
+printf("Drift velocity of electron (in m/s)")
+disp(Vd)
+printf("Fermi velocity of electrons (in m/s)")
+disp(Vf)
+printf("Mean free path(in m)")
+disp(lam_m)
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