Kirchhoff's current law (1st Law) states that the current flowing into a node (or a junction) must be equal to the current
flowing out of it. This is a consequence of charge conservation.
Kirchhoff's voltage law (2nd Law) states that in any complete loop within a circuit, the sum of all voltages across components which supply electrical energy such as cells or generators) must equal the sum of all voltages across the other components in the same loop. This law is a
consequence of both charge conservation and the conservation of energy.