Question

advantages and comparison between kvl and kcl

Answer 1

KCL : Kirchhoff's Current Law

The sum of currents that enter a node is equal to the sum of currents that leave the node i.e. analysis of a circuit using KCL is done at a particular node.Hence KCL(nodal analysis) is preferred to obtain node potentials(as the currents entering/leaving the node can be expressed in terms of node potential while applying KCL).

KVL : Kirchhoff's Voltage Law

The sum of all voltages or potential differences in an electrical circuit loop is 0 i.e. analysis of a circuit using KVL is done for a particular loop.Hence KVL(loop analysis) is preferred to obtain loop currents(as loop potential differences can be expressed in terms loop currents while applying KVL).

Answer 2

KVL and KCL are two fundamental laws derived from the conservation of charge and conservation of energy laws and applied to circuits. These laws are used to develop equations for circuit analysis

Kirchhoff's Voltage Law (KVL) 
Kirchhoff's voltage law states that the algebraic sum of the voltages around any loops in a circuit is always zero.

Kirchhoff's Current Law (KCL)
Kirchhoff current law states that the algebraic sum of all currents entering a node of a circuit is always zero.