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高中物理修选课本第六章第一节提出的电荷守恒定律是自然界中非常重要的规律，作为该定律的一个应用，常以其阐明节点处电流的规律：在分支电路中，任一节点处流向节点的电流之和等于流出该节点的电流之和．不少在教学中使用《中学物理教学参考》杂志的读者来信征询下面一...
The law of conservation of electric charge proposed in the first chapter of the sixth chapter of the physical physics textbook is a very important law in nature. As an application of this law, it is often used to clarify the law of current at a node: in a branch circuit, at any node The sum of the currents flowing to the nodes is equal to the sum of the currents flowing out of the nodes. Many of the readers of the “Reference to Physics Teaching Reference in Middle School” in the teaching are invited to consult the following...