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新编中学物理教学大纲高中物理电学部分，增加了有关电势差计及用电势差计测量电沅电动势的内容。我们在这里，将对“用电势差计测量电沅电动势的实验”中电流计指针指零的条件，进行一些分
The new middle school physics syllabus The senior school physical sciences section added the contents of the potential difference meter and the electric potential meter to measure the electromotive force. Here, we will perform some points on the condition of the zero point of the current meter in the “Measurement of electromotive force using an electric potential difference meter”.