电热器的保温功率与加热功率是物理考试中的热点问题,也是难点问题。它考查了学生对电学知识的综合应用能力,也体现了生活、物理、社会相融合的教学精髓。但是,很多同学在学习过程中难以判断,甚至不会判断电热器的保温功率与加热功率,对此类题型产生恐惧心理,以致在做题过程中经常会出现一些失误,或者看着题目无从下手。如果我们能找到一个简单的方法,让学生简单明了地判别电热器的加热档与保温档,那么解题 Insulation power and heating power heater physical examination is a hot issue, but also difficult issues. It examines students’ comprehensive ability to use electrical knowledge, and reflects the essence of teaching that integrates life, physics and society. However, many students in the learning process is difficult to judge, not even to determine the electric heater insulation power and heating power, such questions have a fear, so often in the process of making mistakes, or looking at the problem Start. If we can find a simple way for students to simply and easily determine the electric heating heaters and insulation file, then solve the problem