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Which of the following is a correct general form of Kirchhoff's Voltage Law for any closed loop, using signed potential changes $\Delta V$?
A$\sum \Delta V = 1$
B$\sum \Delta V = I$
C$\sum \Delta V = 0$
D$\sum \Delta V = R$
Answer & Solution
Correct answer: C. $\sum \Delta V = 0$
Kirchhoff's Voltage Law states that if all potential rises and drops are added with sign around a closed loop, the total is zero. This compact general form is $\sum \Delta V=0$.
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