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物理问题隐含形式多种多样,是考查对物理规律是否熟练掌握,能否灵活应用的重要途径;更能考查考生思维的发散性、严密性等重要思维品质;必须引起充分注意。其隐含形式大致可归纳如下: 1.隐含研究对象 例1 如图1,验电器原来已带正电,其箔片张开一定角度,今将一不带电的枕形绝缘导体A移近,则其箔片张角()。 图1 A.增大 B.减小 C.不变 D.无法确定 解析 不少同学认为不变,选C。这是错误
Implicit forms of physical problems are various and varied. They are important ways to examine whether the laws of physics are mastered proficiently and can be flexibly applied. They can examine the important thinking qualities such as divergence and rigor of the candidates’ thinking, and must be given full attention. Its implicit form can be summarized as follows: 1. Implicit research object Example 1 As shown in Figure 1, the electroscope has been positively charged, and its foil is opened at a certain angle. Now it will move closer to an uncharged pin-shaped insulated conductor A. , then its foil angle (). Fig. 1 A. Increase B. Decrease C. No change D. Can’t determine Analyze Many students think that change, choose C. This is an error