电功率是欧姆定律的深化和发展,是电学部分的重点和难点知识之一,也是初中阶段中各种考试的热点问题,更是现实生活中各类用电器的重要参数之一.所以,学好电功率是解决许多电学问题,体会物理与生活的紧密联系,提高自身科学素养的重要基础之一.二、电功率的概念物理学中用电功率表示电流做功的快 Electric power is the deepening and development of Ohm’s law, which is one of the key and difficult points in the electrical part of the knowledge, but also the hot issues of various exams in the junior high school stage, but also one of the important parameters of various types of electrical appliances in real life. It is one of the important foundations to solve many electrical problems, understand the close relationship between physics and life, and improve their own scientific accomplishments. Second, the concept of electric power Physics in the use of electrical power that power work faster