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In the loop shown, which expression represents Kirchhoff's Voltage Law as written in the notes? 
A$V_1+V_2+V_3+V_4+V_5+V_6+V_7-V_s=0$
B$V_1+V_2+V_3+V_4+V_5+V_6+V_7+V_s=0$
C$V_s=0$
D$V_1+V_2+V_3=V_4+V_5+V_6+V_7$
Answer & Solution
Correct answer: A. $V_1+V_2+V_3+V_4+V_5+V_6+V_7-V_s=0$
The figure and the printed relation show that the sum of the voltage drops across the elements minus the source voltage is zero: $V_1+V_2+V_3+V_4+V_5+V_6+V_7-V_s=0$.
