Electricity & Magnetism
Kirchhoff's Voltage Law
Sum of voltage changes around closed loop is zero.
Variables
ΣVV
Sum of voltages
Around closed loop
Derivation
Conservation of energy in circuit.
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Common questions
What is the Kirchhoff's Voltage Law formula?
Kirchhoff's Voltage Law is written ΣV = 0. Sum of voltage changes around closed loop is zero. It belongs to Electricity & Magnetism, under Electric Circuits.
What are the units in ΣV = 0?
In SI units, ΣV is sum of voltages, measured in kg·m²/(A·s³).
How is the Kirchhoff's Voltage Law formula derived?
Conservation of energy in circuit. The result is ΣV = 0.