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+// Find Id when Vgs=4V
+// Basic Electronics
+// By Debashis De
+// First Edition, 2010
+// Dorling Kindersley Pvt. Ltd. India
+// Example 6-15 in page 288
+
+clear; clc; close;
+
+// Given data
+K=0.15*10^-3; // Constant in mA/V^2
+Vt=2; // Given voltgae in V
+Vdd=12; // Drain voltage in V
+Vgs=4; // Gate-source voltage in V
+
+// Calculation
+Vgg=sqrt(5.4/0.15)+2;
+Id=K*(Vgs-Vt)^2;
+printf("(a)Vgg = %0.0f V,\n(b)Id = %0.1e A",Vgg,Id);
+
+// Result
+// (a) Vgg = 8 V
+// (b) Id = 0.6 mA
+\ No newline at end of file