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+//Ex1_5 Pg-45
+clc
+disp("Refer to the figure 1.55")
+disp("(a) R_L varies from 1 ohm to 10 ohm.")
+disp("Currents for two extreme values of R_L are")
+Vs=10 //supply voltage
+RL1=1 //resistance RL1
+Rs=100 //source resistance
+IL1=(Vs/(RL1+Rs))
+RL2=10
+IL2=(Vs/(RL2+Rs))
+per_var_cur=((IL1-IL2)/IL1)*100
+printf("\n Percentage variation in current = %.2f %%\n",per_var_cur)//answer in the text book took a .3 decimal round off value
+disp("   Now,load voltage for the two extreme values of R_L are")
+VL1=IL1*RL
+VL2=IL2*RL2
+per_var_vol=((VL2-VL1)/VL2)*100
+printf("\n Percentage variation in current = %.2f %%\n",per_var_vol)
+
+disp("(b) R_L varies from 1 k-ohm to 10 k-ohm              (Figure 1.55(b))")
+disp("Currents for the two extreme values R_L are")
+RL11=1000
+IL11=(Vs/(RL11+Rs))
+RL22=10000
+IL22=(Vs/(RL22+Rs)) //mistake in book value
+per_var_cur11=((IL11-IL22)/IL11)*100
+printf("\n Percentage variation in current = %.2f %%\n",per_var_cur11) //mistake in book value