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+// Ex 63 Page 404
+
+clc;clear;close;
+// Given
+R=180;//ohm
+V=4;//V
+l=75;//cm
+vd=.4;//V
+emf=1.9;//V
+Rc=850;//ohm
+sg=17.5;//mm/uA
+df=2;//mm
+
+
+I=R/V;//A
+Rw=vd/I;//ohm 
+Id=df/sg*10**-6;//A 
+el=1/sg*Rc;//uV
+printf("error limit = %.1f uV",el)
+Rw1=0.2/l*Rw;//ohm (for 2cm slide wire)
+dV=I*Rw1*1000;//mV 
+r1=emf/I;//ohm 
+r2=r1*22.8/R;//ohm
+Ig=dV/1000/(Rc+r2);//A
+d=dV/1000/(Rc+r2)/Id;//mm
+printf("\n Deflection  = %.1f mm",d)