而由汞及其两种离子的溶液组成的两种电池的电动势是相等的。
But for two composed of mercury and its two kinds of ion solutions the EMF's are equal.
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。
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.
根据电压补偿原理，设计了自组电位差计的几种实验电路，用于测量干电池的电动势和内阻。
According to the voltage compensation method, several experiment circuits of potentiometer are designed to measure the voltage and the internal resistance of the dry battery.
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