Kirchhoff's first law or the junction law states that: the total current entering the junction is equal to the total current leaving the junction. This follows from the conservation of charge - charge cannot be created or destroyed. As a consequence, the charge entering the junction should equal the charge leaving the junction. The scenario below: 1₂ 1₁ 1₂ follows Kirchhoff's junction rule violates Kirchhoff's junction rule as there is no outgoing current cannot determine whether it follows the junction rule or not without knowing the magnitude of the currents

Kirchhoff's first law or the junction law states that: the total current entering the junction is equal to the total current leaving the junction. This follows from the conservation of charge - charge cannot be created or destroyed. As a consequence, the charge entering the junction should equal the charge leaving the junction. The scenario below: 1₂ 1₁ 1₂ follows Kirchhoff's junction rule violates Kirchhoff's junction rule as there is no outgoing current cannot determine whether it follows the junction rule or not without knowing the magnitude of the currents

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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Concept explainers

Microscopic view of current

In physics, the term current is expressed as the rate of flow of electric charges across the area per unit time (I=q/t). It propagates along in the direction of the motion of positive charges. When the current is caused by the motion of electrons, the direction of the current is opposite to the flow.

Question

Kirchhoff's first law or the junction law states that: the total current entering the junction is
equal to the total current leaving the junction. This follows from the conservation of charge
- charge cannot be created or destroyed. As a consequence, the charge entering the junction
should equal the charge leaving the junction.
The scenario below:
12
1₁
13
follows Kirchhoff's junction rule
violates Kirchhoff's junction rule as there is no outgoing current
cannot determine whether it follows the junction rule or not without knowing the magnitude of the
currents

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