Kirchhoff loop rule (second law) states that “In a closed electrical circuit the algebraic sum of all the electromotive forces and the voltage drops in the resistors of the circuit is zero.”
Mathematically,
ΣΕ = ΣΙR
Here ε is the electromotive force in the circuit, I is the current flowing in the circuit, R is the load resistance.
Hence according to this rule energy supplies by all emf sources = energy consumed by loads

Kirchhoff junction rule (first law) states “the algebraic sum of all the currents flowing toward a junction is equal to the sum of all the currents flowing away from the junction”.
Mathematically
ΣI= 0 => ΣQ/T= 0 => ΣQ = 0
This indicates the law of conservation of charge.  The net charge at the node is zero. Charge neither accumulates nor produced at the junction. Therefore, charge is conserved.