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Diffstat (limited to '3655/CH3/EX3.4/Ex3_4.sce')
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diff --git a/3655/CH3/EX3.4/Ex3_4.sce b/3655/CH3/EX3.4/Ex3_4.sce new file mode 100644 index 000000000..386820fea --- /dev/null +++ b/3655/CH3/EX3.4/Ex3_4.sce @@ -0,0 +1,24 @@ +// Example 3.4 +// Computation for percentage of electrons leaving a tungstan filament which can surmount a barrier of height 1eV// +// Page no.78 + +clc; +clear; +close; + +//Given data ; +Vr=1; +VT=2700/11600;//VT=T/11600 + + +//Calculation for percentage of electrons leaving a tungstan filament at 2700 degree K// +P1=(exp(-Vr/VT))*100;//P1=I/Ith + +//Hence only about 1.4% of the electrons have surface-directed energies in excess of 1eV// + + +//Displaying the result in command window +printf('\n Percentage of electrons leaving a tungstan filament which can surmount a barrier of height 1eV = %0.1f percent',P1); + + +//Answers are varying due to round off error// |