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+// Example 4.9
+format('v',5)
+clc;
+clear;
+close;
+// given data
+C= 100;//in µF
+C= C*10^-6;// in F
+Rz= 5;//in Ω
+Rs= 1*10^3;//in Ω
+Idc= 11*10^-3;//in A
+f=120;//in Hz
+Vin_rip= Idc/(f*C);// in V
+// The ripple across the load resistance 
+Vout_rip= Rz*Vin_rip/(Rs+Rz);//in A
+Vout_rip= Vout_rip*10^3;// in mV
+disp(Vout_rip,"The ripple across the load resistance in mV is : ")