所谓变化电路 ,就是在电路中由于滑动变阻器滑片位置的改变 ,或开关的闭合、断开及其他原因而引起电路结构的变化 ,从而导致电路中的电阻、电流、电压、电功率等有关物理量发生变化的电路 .这类问题的求解是初中物理学中的重难点 ,也是各地中考命题的热点 .本文就变化电路的形? The so-called change circuit is that in the circuit due to the sliding varistor slider position changes, or switch closure, disconnection and other causes of the circuit structure changes, resulting in the circuit in the resistance, current, voltage, electrical power and other related physical quantities The circuit of change. The solution to this kind of problem is the heavy point in the physics of junior high school, and it is also the hot spot of the examination proposition in various places. This paper will change the shape of the circuit.