analysis of the safe use of electricity for electric power and family life in middle school physics teaching（分析电力安全使用的电力和家庭生活的中学物理教学）.doc

Analysis of the safe use of electricity for electric power and family life in middle school physics teaching Thesis network: Abstract: The electric power is a focus of middle school physics teaching, they would often test centers also various types of examinations. With the deepening of education reform, the junior high school physical exam test centers and our contact is becoming more and more closely . Electric power as a junior high school physical focus, easy to test sites, and is often combined with the practical problems of family life and electrical safety up the title, starting from junior high school physical theory of the electric power, combining with the actual situation of the family life safe use of electricity, analysis of the examination may be involved in the electric power content. Keywords: junior high school physical electric power using electricity safely home schooling Theoretical knowledge in the electric power is not just a junior high school physics textbook, it and our lives are closely related to abstract for students in the study of electric power was difficult, we can explain the electrical safety point of view of family life, linking theory with practice. to let students out of the woods, to grasp this important point of knowledge. First we have to understand the electric power, contact and then on the basis of real life. First, the electric power Definition of electrical power: electrical energy consumption of per unit time, measure the consumption of electrical energy speed of physical quantities, usually it is with P said, its unit is the Watt (the W, by its definition shows that P = the W / t -, which the electricity of the unit is the joule (J, the time unit is seconds (S. This formula can be rewritten as W = Pt, it can calculate the power consumed by electrical appliances in the period of time. Electric power can also be obtained by the following formula: P = UI, which is a generally useful formula, w