The process of cooperative teaching on physics and chemistry experiment, which measuring the electromotive force and internal resistance using the primary cell produced by fruit, is expatiated.
阐述了利用水果制作原电池进而测定电池的电动势和内阻的理化实验课的协同教学过程，并对教学效果进行了反馈。
A new method of measuring electromotive force and internal resistance of source using voltmeter instead of potentiometer was studied.
讨论了用伏特计代替电位差计测电源的电动势和内阻的新方法。
The essay introduces a new method to measure electromotive force of source, That is using oscilloscope comparative law to measure electromotive force and internal resistance of source.
本文介绍了一种新的测量电源电动势的方法，即用示波器测电池的电动势和内电阻。
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