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+// Exa 17.18
+
+clc;
+clear;
+
+// Given
+
+// Capacitive Transducer
+d = 0.05; // plate separation in mm
+C = 5*10^-12; // Capacitence in farad
+dell_C = 0.75*10^-12; // change in capacitence in farad
+
+// Solution
+
+// C = e*A/d;
+eA = C*d;
+
+//Now,
+dell_x = eA/dell_C;
+printf('The displacment that caused a change in capacitence is %.3f mm \n',dell_x);