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近年来通过图象来考查同学们的相关能力已是一种趋势,也是命题的热点,图象的考查,能反映同学们掌握物理规律、应用物理知识的综合能力以及从图象中获取信息的能力.欧姆定律部分涉及的问题多、方法活,我们如何有效的利用图象解决问题呢?下面选取几种典型分析.例1如图1甲所示,当开关S从2转换到点1时,电流表和电压表对应的示数如图1乙所示,由图1甲和图1乙中的信息可
In recent years, through the image to examine the relevant ability of students is a trend, but also the hot topic proposition, image examination, can reflect the students grasp the laws of physics, the application of physical knowledge and the ability to acquire information from the image Ability.Ohm law part of the issues involved, the method of live, how do we effectively use the image to solve the problem? Here are a few typical analysis of the selection.Example 1 As shown in Figure 1 A, when the switch S from 2 to point 1 , Ammeter and voltmeter corresponding to the number shown in Figure 1 B, from Figure 1 A and Figure 1 B in the information can be