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Which statement best matches Kirchhoff's Voltage Law for any closed electrical loop?
AThe product of resistance and current is constant everywhere
BThe algebraic sum of all potential differences around the loop is zero
CThe sum of currents in the loop is always zero
DThe source voltage equals the largest resistor voltage only
Answer & Solution
Correct answer: B. The algebraic sum of all potential differences around the loop is zero
Kirchhoff's Voltage Law states that when voltage rises and drops are added with signs around a closed loop, the total is zero. This is the loop form of energy conservation.