Kirchhoff’s Voltage Law (KVL)
The sum of all voltages around any closed loop in a circuit equals zero.
In a series circuit: V_source = V_component1 + V_component2 + ...
Application: in LED circuit — V_supply = V_resistor + V_LED, so V_resistor = V_supply - V_LED.
See Also
- Electronics and Circuitry topic
- Ohm’s Law concept