1st Kirchhoff's law: In a series electrical circuit, the sum of the partial voltages is equal to the voltage applied in the circuit and the value of the electrical current is equal at all points in the circuit.
2nd Kirchoff's law: In a parallel electrical circuit, the sum of the partial currents is equal to the input current of the circuit and the value of the applied voltage is equal in all components of the circuit.
Ohm's Law: The current in an electrical circuit is directly
proportional to the voltage and inversely proportional to the resistance.
