"Series and Parallel" Current and Circuit PPT

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"Series and Parallel" Current and Circuit PPT

Part One Content: A Classification Practice of Knowledge Key Points

Knowledge point 1: Basic composition of series and parallel circuits

1. There are two most common connection methods for circuits. As shown in Figure 15-3-1, the connection method in which several electrical appliances are connected in series and then connected to the circuit is called ________; the two ends of several electrical appliances are paralleled. The connection method in which the ground is connected together and then connected to the circuit is called ________.

2. In the two circuit diagrams A and B shown in Figure 15-3-2, the connection method of the light bulb is ()

A. A is a series

B． B is a series

C. A and B are both connected in series

D． A and B are both connected in parallel

3. In the circuit shown in Figure 15-3-3, after the switch is closed, the circuit in which two light bulbs are connected in parallel is ()

Knowledge point 2 Basic characteristics of series and parallel circuits

4. There are only ________ paths for current in a series circuit; electrical appliances work at the same time, and they ________ each other; switches control ________ electrical appliances, and if the position of the switch changes, the control function of the switch is ________.

5. There are ________ paths for current in a parallel circuit; electrical appliances work at the same time, and they ________ each other; the trunk switch controls the ________, and the branch switch controls the ________ where it is located.

6. To install a switch in the circuit shown in Figure 15-3-4, the correct statement about the installation location is ()

A. Must be installed at location a

B． Must be installed at b

C. Must be installed at c

D． The above three places can be installed

7. In the circuit shown in Figure 15-3-5, the switch can control two lights at the same time, and the lighting conditions of the two lights do not affect each other. The circuit is ()

Knowledge point 3: Connecting series circuits and parallel circuits

8. As shown in Figure 15-3-6, connect the physical circuit according to the circuit diagram.

9. According to the circuit diagram shown in Figure 15-3-7A, connect the physical diagram shown in Figure B.

Knowledge point 4: Circuits in life

10. The street lights in the city are _________ connected; all the electrical appliances in the home are _________ connected, and the switch that controls each electrical appliance is _________ connected to the electrical appliance; the "sky full" used on the Christmas tree "Star" small lanterns, each small light bulb in a string of lanterns is ________ connected.

Series and parallel PPT, part 2: Comprehensive practice of B-law method

12. Regarding series circuits and parallel circuits, which of the following statements is correct ()

A. Two lamps are connected in series in a circuit. When the switch is closed, the lamp closest to the positive terminal of the power supply lights up first.

B． The street lights on the road always turn on and off at the same time. They must be connected in series.

C. The lights in the classroom are all connected in parallel

D． The flashlight switch and the small light bulb are connected in parallel

13. (Multiple choice) Which of the following circuits is a parallel circuit ()

14. The compressor (motor) of the refrigerator is controlled by the temperature control switch, and the lighting in the refrigerator compartment is controlled by the refrigerator door (the light comes on when the door is opened, and goes off when the door is closed). In the circuit diagram shown in Figure 15-3-10, the one that meets the above characteristics is ()

15． In the circuit shown in Figure 15-3-11, if you want to connect lamps L1 and L2 in series, you should close the switch ________ and open the switch ________; if you want to connect the lamps L1 and L2 in parallel, you should close the switch ________ and open the switch ________. Open the switch ______; if you close the switches S1 and S3, ________ will appear, which is not allowed.

16． As shown in Figure 15-3-12, before the car turns, the driver will move the crossbar next to the steering wheel, and the front and rear turn signals on the same side of the car will flash and go out at the same time. These two turn signals are in the circuit. The connection method in is ________; the crossbar moved by the driver is equivalent to the ________ in the circuit.

17． There is an existing power supply, two switches and two light bulbs. Please design the circuit so that L1 lights up when S1 is closed and L2 lights up when S2 is closed. Draw the circuit diagram in the dotted box, and then connect it to the physical diagram as shown in Figure 15-3-13.

Series and parallel PPT, Part 3 content: Practical practice of C high-frequency examination questions

18. [2017·Shaoyang] Lighting lights and ventilation fans need to be installed in the bathroom. Sometimes they need to work independently, and sometimes they need to work at the same time. Which of the following circuit diagrams meets the design requirements is ()

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Update Time: 2024-10-03

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