电动机在生产和生活中的应用十分广泛,电车、电力机车、工厂里的各种机床都离不开电动机,许多家用电器和电动玩具也用电动机作为动力.给电动机通电,它就能够转动,这是为什么?让我们从以下几个方面入手来认识电动机的工作原理及其应用.一、探究磁场对通电导线的作用如图1所示,闭合开关后,在磁场内的通电导线会受力运动:改变电流方向或磁场方向,导线的运动方 Motor in the production and life of a wide range of applications, trams, electric locomotives, factories in various machine tools are inseparable from the motor, many household appliances and electric toys are also used as a motive power to the motor, it can rotate, which Is why? Let us start from the following aspects to understand the working principle of the motor and its application.First, to explore the role of the magnetic field on the power line as shown in Figure 1, after closing the switch, the conductive wire in the magnetic field will be subject to force movement : Change the current direction or the direction of the magnetic field, the movement of the wire