Kirchhoff’s Laws

Kirchhoff’s Laws

Kirchhoff's Current Law

• Kirchhoff’s Current Law (KCL) states that the algebraic sum of current entering a node must be equal to that of leaving the same node.
• Applying KCL, we obtain;

i2 + i6 = i1 + i3 + i4 + i5













Kirchhoff's Voltage Law

• Kirchhoff’s Voltage Law states that the algebraic sum of voltage drop in a loop must be equal to that of voltage rise in the same loop. Stated it in a different way is that the algebraic sum of all voltages around a loop must be zero.
• Applying KVL, we obtain;

Loop 1: V1 + V2 + V3 = Vs
Loop 2: V4 + VIs = V2