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+// Exa 4.6
+
+clc;
+clear;
+
+// Given
+
+l = 25; // length of x-deflection plates in mm
+d = 1; // distance between x-deflection plates in mm
+s = 200; // distance between screen and centre of plate in mm
+Va = 3000; // applied accelerating voltage in volts
+Lt = 100; // length of trace in mm
+
+// Solution
+
+// Deflection produced = y/Vd = s*l/(2*d*Va)
+
+y = 1/2 *(Lt);
+// Therefore, 
+Vd = 2*d*Va*y/(l*s) ;
+
+Vrms = Vd/sqrt(2) ;
+
+printf(' The Vrms of the applied sinusoidal voltage = %.1f V \n',Vd);
+
+Def_sensitivity = l*s/(2*d*Va) ;
+printf('  The deflection sensitivity = %.5f mm/V \n',Def_sensitivity);
+
+// The answer provided in the textbook is wrong