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+// chapter 2
+// example 2.5
+// Calculate the required gate resistance source
+// page-31
+clear;
+clc;
+// given
+Pg=0.012; // in W (power) Pg=Vg*Ig
+gradient=3E3; // gradient=Vg/Ig
+Egs=10; // in V
+// calculate
+// Since gradient*Pg=Vg^2 therefore we get
+Vg=sqrt(gradient*Pg); // calculation of gate voltage
+Ig=Pg/Vg; // calculation of gate current
+Rg=Vg/Ig; // calculation of gate resistance
+Ig=Ig*1E3; // changing unit from A to mA
+Rg=Rg*1E-3; // changing unit from ohm to kohm
+printf("\nThe required gate voltage is \tVg=%.f V\n",Vg);
+printf("\nThe required gate current is \tIg=%.f mA\n",Ig);
+printf("\nThe required gate source resistance is \tRg=%.f kohm\n",Rg);
+// Note:  the value of gate source resistance has not been calculated in the book.
+\ No newline at end of file