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+// Exa 2.18
+format('v',7);clc;clear;close;
+// Given data
+Error = 2/100;
+Voltmeterrange = 50;//voltmeter range in V
+Ammeterrange = 125;//ammeter range in mA
+A1 = 40;//voltmeter reading in V
+A2 = 125;//ammeter reading in mA
+del_a1 = Error*Voltmeterrange;// in V
+del_a2 = Error*Ammeterrange;// in mA
+e1 =  del_a1/A1;// error in voltage
+e2 = del_a2/A2;// error in current
+e_T= (e1+e2)*100;//limiting error of the power calculated  in %
+disp("The limiting error of the power calculated is : ± "+string(e_T)+" %")
+
+