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电路的变换反映了同学们对基本知识和基本技能的掌握情况,是解电学题的基础,也是同学们在学习过程中的难点。 将一个电路交换成它的等效电路时,有以下一般规律: 1.开关连通时,可等效于一根导线,断开时,等效于此处断路。 2.A表在电路中等效于一根导线。 3.V表在电路中等效于此处开路。 4.两端被导线短接的用电器不工作。 5.同一根导线中间无用电器时相当于同一点。 例1 图1中四个灯泡的连接方式是
The transformation of the circuit reflects the mastery of basic knowledge and basic skills of the students. It is the foundation of the solution to the problem of electricity, and it is also a difficulty for the students in the learning process. When switching a circuit to its equivalent circuit, there are the following general rules: 1. When the switch is connected, it can be equivalent to one wire, and when it is opened, it is equivalent to the open circuit. The 2.A meter is equivalent to a wire in the circuit. 3. The V-table is equivalent to open circuit in this circuit. 4. Electrical appliances short-circuited at both ends do not work. 5. The same point is used when there is no use of electrical appliances in the same wire. Example 1 The connection of the four bulbs in Figure 1 is