Almost as famous and useful as Ohm's Law, Kirchhoff's Laws address current into and out of a node, and voltage drops and rises around a closed loop: The sum of the currents flowing into a node must equal the sum of the currents flowing out. The sum of the voltage drops around a closed loop must equal the sum of the voltage rises.
kirchhoff's voltage law:- it states that sum of all emfs and voltage drops is equal to zero kirchhoff's current law:- at a node,incoming currents is equal to outgoing currents