diff options
Diffstat (limited to '3754/CH10/EX10.6/10_6.sce')
| -rw-r--r-- | 3754/CH10/EX10.6/10_6.sce | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/3754/CH10/EX10.6/10_6.sce b/3754/CH10/EX10.6/10_6.sce new file mode 100644 index 000000000..c97cef0de --- /dev/null +++ b/3754/CH10/EX10.6/10_6.sce @@ -0,0 +1,24 @@ +clear//
+
+//Variables
+
+l = 0.2 * 10**-3 //length (in meter)
+A = 0.04 * 10**-6 //Area of cross section (in square-meter)
+V = 1 //Voltage (in volts)
+I = 8 * 10**-3 //current (in Ampere)
+un = 0.13 //mobility of electron (in m**2 per volt-second)
+q = 1.6 * 10**-19 //charge on electron (in Coulomb)
+
+//Calculation
+
+
+R = V/I //Resistance (in ohm)
+p = R * A/l //Resistivity (in ohm-meter)
+sig = 1/p //Conductivity (in siemen per meter)
+n = sig / (q * un) //concentration (in per cubic-meter)
+J = I/A //current density (in Ampere per square-meter)
+v = J/(n*q)
+
+//Result
+
+printf("\n Concentration of free electrons is %e m**-3.\nDrift velocity is %0.3f m/s.",n,v)
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