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物理具有高度的科学性和严密的逻辑性,在物理教学中,习题课是一种常用的课型,习题的质量是教师在精选习题或命题时必须考虑的重要因素.习题设计不仅要体现其功能性,更要保证其科学性.然而,现在的教辅、教材中有的物理习题存在科学性问题,随意捏造数据,违背事物的客观规律.本文以一道经典的电磁感应的问题为例,讨论了这道题目中由于磁感应强度B数值设置的不科学而带来的问题.
Physics has a high degree of scientific and rigorous logic, in physics teaching, exercises is a commonly used class, the quality of exercises is the teacher in the selected exercises or propositions must be considered an important factor in the exercise design not only to reflect Its function, but also to ensure its scientific.However, some teaching exercises, teaching materials in the existence of scientific problems, arbitrary fabrication of data, contrary to the objective laws of things.This paper takes a classic case of electromagnetic induction as an example , Discusses the problem in this subject due to the unscientific setting of the magnetic induction B value.