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求两个量之比的问题 ,是初中物理的常见题型 ,其处理方法大家也比较熟悉 .但对求两个以上的量之比 ,即连比问题 ,许多同学就感到无从下手 ,或者由于方法不对而出错 .为帮助大家突破这一难点 ,下面以一道中考题为例 ,介绍两种求连比的有效方法 .题目 如图所示 ,电流表Ａ1的示数
The problem of finding the ratio between the two quantities is a common problem in junior high school physics, and its processing methods are also familiar to everyone. However, for the ratio of two or more quantities, that is, even the ratio problem, many students feel that they cannot start, or because The method is wrong and mistakes. In order to help everyone overcome this difficulty, the following is an example of a mid-examination exam to introduce two effective methods for finding the ratio. The topic is shown in the figure, the number of currents in the ammeter A1.