Kirchoff's Law is a result of which of the following principles?
A. Conservation of charge
B. Conservation of energy
C. Conservtation of linear momentum
D. Conservation of angular momentum
A
Kirchoff's 1st Law states that the sum of the currents entering a node must equal the sum of the currents leaving the node. In other words, any charge entering a node must leave the node. The concept that no charge can be lost is a result of the principle of conservation of charge.