Kirchhoff’s Current Law (KCL)

KCL defines that at any node (or junction) in a circuit the algebraic sum of currents entering and leaving a node at any instant of time should be equivalent to zero. Here currents entering (+ve sign) and currents leaving (-ve sign) the node should be assigned opposite algebraic signs (as shown in figure (a),

                                             I₁-I₂ + I₃-I₄ + I₅-I₆ = 0

                                                 Figure: Kirchhoff’s current law