Formulate the first Kirchhoff rule. What is the consequence of this rule? How many independent equations can be made using the first Kirchhoff rule?
The sum of the forces of constant currents flowing into a given node is equal to the sum of the forces of constant currents flowing from this node. This rule is a consequence of the law of conservation of charge. The number of independent equations based on the first Kirchhoff rule will always be one less than the number of nodes in the circuit.
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