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The algebraic sum of all voltages around any closed loop in a circuit is equal to zero. In other words, the total rise in potential (voltage sources) in a loop is exactly equal to the total drop in potential (across resistors, capacitors, etc.) in that same loop. Mathematical Form \(\sum V = 0\) \(V_1 + … Read more

The algebraic sum of all currents entering and leaving a junction (node) in an electrical circuit is zero. \(\sum I = 0\) \(\text{Total Current Entering} = \text{Total Current Leaving}\)

Statement In any linear circuit containing two or more independent sources, the current through or voltage across any element in the circuit is equal to the algebraic sum of the currents or voltages produced by each independent source acting alone, with all other independent sources replaced by their internal impedances.