滑动变阻器滑片的移动,开关的开合,以及电路故障,都是电路发生动态变化的原因,下面我们就从这三个方面入手进行分析.一、滑动变阻器滑片位置移动引起的变化例1在图1所示的电路中,闭合开关后,当滑动变阻器的滑片P向右移动时,下列说法正确的是().A.电流表示数增大,灯变暗B.电流表 Slider rheostat slider movement, switch opening and closing, and circuit faults are the reasons for the dynamic changes in the circuit. Here we start with these three aspects to analyze. First, the sliding resistor varistor slider position changes caused by changes in Example 1 In the circuit shown in Figure 1, after the switch is closed, when the slide P of the sliding rheostat moves to the right, the following statement is correct (). A. The current expression increases, the lamp dims B. Ammeter