论文部分内容阅读
在初中物理教學中,关於歐姆定律一節,也和電壓一樣是比較難講的部分,因為它是說明電流强度、電壓和電阻之間的关係的定律,内容是比較抽象的,茲就這一節的教学中應該注意的幾點提出個人的意見,供大家在研討這一方面的參考。首先,應了解歐姆定律是說明電流强度、電阻和電壓三者之間的相互關係的,它在初中電学中是比較深的部分;雖然學生從第一、二章已懂得一些關於電的初步知識和電流的基本概念,但這些都是比較新穎的知識,學習起來也不能一下就熟練。所以物理課本第三章為了講
In the physics of junior high school, the section on Ohm’s Law is just as hard to talk about as voltage, because it is a law that describes the relationship between current intensity, voltage, and resistance. The content is rather abstract. Teaching should pay attention to a few personal opinions for everyone to discuss this aspect of the reference. First of all, it is understood that Ohm’s Law is a description of the interrelationship between amperage, resistance and voltage, and it is a relatively deep part of junior high school electricity; although students have learned a few preliminary lessons from the first and second chapters about electricity The basic concepts of knowledge and current, but these are relatively new knowledge, learning can not be skilled. So the third chapter of physics textbooks to say