alleryStart learning →KIRCHHOFF'S VOLTAGE LAW (KVL) states that around any closed loop
Athe sum of currents is zero
Bthe resistance is constant
Cthe power is conserved
Dthe algebraic sum of voltages is zero
Answer & Solution
Correct answer: D. the algebraic sum of voltages is zero
1. KVL is the CONSERVATION OF ENERGY around a closed loop.
2. $\sum V = 0$ around any loop, with sign convention (drops vs rises).
3. Apply: sources are negative (rise), resistor drops are positive when traversed in the current direction.
4. Together with KCL, KVL is the foundation of all DC circuit analysis.
5. Option A is KCL. Options B, C are not Kirchhoff's laws.
_Source: Tony Kuphaldt, "Lessons in Electric Circuits — DC", Vol I, Ch 5 (KVL)._
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