Basic Electrical Theorems and Circuits Analysis Laws

Law Definition Relationship
Ohm’s Law modified for AC circuits with sinusoidal signals U’=ZxI’, where U’ & I’ -voltage and current phasors, Z-complex impedance (u=Rxi) Lorentz force law, Faraday’s law and Drude model
Kirchhoff’s Current Law (KCL) The sum of electrical currents which flow into any junction in an electric circuits is equal to the sum of currents which flow out Conservation of electric charge
Kirchhoff’s Voltage Law (KVL) The sum of electrical voltages around a closed circuit must be zero Conservation of energy

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