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For the loop drawn in the figure, the correct Kirchhoff voltage equation shown on the page is 
A$V_1+V_2+V_3+V_4+V_5+V_6+V_7-V_s=0$
B$V_s+V_1+V_2+V_3+V_4+V_5+V_6+V_7=0$
C$V_1+V_2+V_3-V_4-V_5-V_6-V_7=0$
D$V_s=0$
Answer & Solution
Correct answer: A. $V_1+V_2+V_3+V_4+V_5+V_6+V_7-V_s=0$
The page states Kirchhoff's Voltage Law for the shown loop as the sum of all voltage drops minus the source emf equals zero. Thus $V_1+V_2+V_3+V_4+V_5+V_6+V_7-V_s=0$.