一、滑动变阻器的几种接线方法在滑动变阻器的金属棒上和绝缘线圈上备选一个接线柱串联在电路中，变阻器就可以改变电阻．滑动变阻器的正确连接方法有如下几种：二、滑动变阻器在电路中的作用1．改变电路中的电流强度·多如图2所示．当滑动变阻器的滑片向左移动时，电流表读数 First, several wiring methods of the sliding rheostat are alternately connected in series on the metal rod of the sliding rheostat and on the insulating coil. The varistor can change the resistance. The correct connection method of the sliding rheostat is as follows: Second, the role of the sliding rheostat in the circuit 1. Change the current intensity in the circuit much as shown in Figure 2. Ammeter readings when the slider of the sliding rheostat moves to the left