功率是中考的常考点之一。常见的考查类型有:(1)考查对功率概念的正确理解;(2)能根据相关公式比较或计算功率的大小;(3)会测量物体的功率。一、比较功率的大小功率是反映物体做功快慢的物理量,功率的大小是由物体所做功的多少和做功时间的长短这两个条件共同决定的。比较功率的大小, Power is one of the most frequently used tests in the examination. Common types of examinations are: (1) to examine the correct understanding of the power concept; (2) to be able to compare or calculate the power according to the relevant formula; (3) to measure the power of the object. First, compare the size of the power Power is a physical quantity that reflects the speed of the object to do work, the size of the power is determined by the two conditions of the number of work done by the object and the length of work done. Compare the size of the power,