Kirchoff's Laws

Kirchhoff's Laws

Kirchhoff’s Laws are Conservation Rules of a circuit.

Kirchoff's 1^st Law (The Junction Rule) states that the total current that enters a junction is equal to the total current that leaves the junction.

In the above diagram the current i₁ is equal to the sum of currents i₂, i₃, and i₄.

Here, the charge is conserved.

Kirchoff's 2_nd Law (The Closed Loop Rule): Conservation of energy. The sum of voltages around a closed network is zero.

Can be also stated as 'the sum of emfs in a closed loop is equivilent to the sum of the potential drops in the loop'.

An example of a closed loop

Here, the energy is conserved.

Below is a detailed video explanation of Kirshoff's Laws:

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