Question

The two Kirchhoff’s rules are based on the law of conservation of two physical quantities. Name the quantities.

Answer 1

Junction Rule (First Rule): It states that the sum of currents entering a junction equals the sum of currents leaving it. This is based on the law of conservation of charge, as charge cannot accumulate at a point.

Loop Rule (Second Rule): The algebraic total of potential changes around any closed loop is zero. This is predicated on the law of conservation of energy, as the work performed in moving a charge along a closed path in a conservative field must equal zero.

The quantities are charge and energy, respectively.