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diff --git a/182/CH12/EX12.2/12_2.txt b/182/CH12/EX12.2/12_2.txt
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+++ b/182/CH12/EX12.2/12_2.txt
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+
+2.correction figure=-6 W
+  wattmeter error=-5 percent 
diff --git a/182/CH12/EX12.2/example12_2.sce b/182/CH12/EX12.2/example12_2.sce
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+// to find the wattmeter error and the correction figure
+// example 12-2 in page 357
+clc;
+//Data given
+V=114;// measured voltage in volt
+P=120;// indicated power in watt
+I=1;// current in ampere
+//calculation
+cf=V*I-P;// here power = v*i, capacitance in farad
+e=cf*100/P;//percentage error
+printf("correction figure=%d W\n",cf);
+printf("wattmeter error=%d percent",e);
+//result
+//correction figure=-6 W
+//wattmeter error=-5 percent 
+\ No newline at end of file