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电灯泡是我们日常生活中不可缺少的家 用电器,在初中电学的学习中,与电灯泡相关 联的知识点很多,下面例举十一个问题并给予 解答,供读者参考. 一、白炽灯为什么选用钨作为灯丝的材 料?白炽灯泡中抽成真空,有的还要充入氮、氩 等气体,这又是为什么? 答:白炽灯是根据电流的热效应制成的.
Light bulbs are indispensable household appliances in our daily life. In the study of junior high school electricity, there are many points of knowledge associated with light bulbs. Here are 11 examples of questions and answers for readers’ reference. I. Why Tungsten Uses Tungsten Lamps? As a material of the filaments, the bulbs in the incandescent bulbs are evacuated, and some of them are filled with nitrogen, argon and other gases. Why is this? A: The incandescent bulbs are made according to the thermal effect of the current.