Kirchoff's Junction Rule

The sum of the currents flowing into a junction is equal to the sum of the currents flowing out of said junction.

Mathematically,

$I_in=I_out$

Diagrammatically,

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Kirchoff's Loop Rule

For any closed loop,the sum of the voltage lifts is equal to the sum of voltage drops.

Mathematically,

$$V_(net)=0$$ …