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+// Ex 17 Page 358
+
+clc;clear;close;
+// Given
+R=80;//ohm
+V=2;//V
+l=50;//cm
+vd=.1;//V
+emf=1.43;//V
+Rc=850;//ohm
+sg=17.5;//mm/uA
+df=1;//mm
+
+
+I=R/V;//A
+Rw=vd/I;//ohm (Resistance of side wire)
+Id=df/sg*10**-6;//A (current for 1mm deflection)
+el=1/sg*Rc;//uV
+printf("The limit of error = %.1f uV",el)
+Rw1=0.2/l*Rw;//ohm (for 2cm slide wire)
+dV=I*Rw1*1000;//mV (Change in voltage from null point)
+r1=emf/I;//ohm (tapped portion) 
+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)