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Suppose in a loop equation the sum of all voltage drops is found to be larger than the source voltage. According to Kirchhoff's Voltage Law, what does this indicate?
AThe loop must contain two hidden current sources
BThe resistance values are necessarily negative
CThere is a sign error or missing voltage term in the equation
DKirchhoff's Voltage Law does not apply to that loop
Answer & Solution
Correct answer: C. There is a sign error or missing voltage term in the equation
KVL requires the algebraic sum around a closed loop to be zero. If the drops exceed the source without any compensating rise, the equation is incomplete or uses incorrect signs. The strongest distractor is D, but the issue is not failure of KVL; it is an error in applying it.