People's Education Edition Physics for Grade 8, Volume 2
People's Education Edition Ninth Grade Physics Complete Book
Shanghai Science Edition Ninth Grade Physics
People's Education Edition Physics for Grade 8, Volume 1
Shanghai Science Edition 8th Grade Physics
Beijing Normal University eighth grade physics volume one
Lu Jiao Edition Ninth Grade Physics Volume 1
Beijing Normal University Ninth Grade Physics Volume 1
Lu Jiao Edition Ninth Grade Physics Volume 2
Lu Ke Edition High School Physics Compulsory Course One
Guangdong and Shanghai Edition Ninth Grade Physics Volume 1
People's Education Press High School Physics Compulsory Course II
Guangdong and Shanghai version of eighth grade physics volume 2
Beijing Normal University Ninth Grade Physics Volume 2
Lu Jiao Edition Eighth Grade Physics Volume 2
Guangdong and Shanghai Edition Ninth Grade Physics Volume 2
!["Assembling Circuits" Simple Circuit PPT Courseware 2](https://resources2020.oss-cn-beijing.aliyuncs.com/resources2020/1b3d3c3013806e50b6d7acde461e90f2.jpg)
Category | Format | Size |
---|---|---|
Beijing Normal University Ninth Grade Physics Volume 1 | pptx | 6 MB |
Description
"Assembling Circuits" Simple Circuit PPT Courseware 2
Practice
How to make two light bulbs light up at the same time
Think of several different connection methods and draw a circuit diagram
series connection
Series circuit: A circuit in which circuit elements are connected one after another, and there is only one path for current to flow.
1. Characteristics of series circuits:
Experiment: Connect two lamps L1 and L2 to form the circuit shown below.
⑴Close the switch: lamp L1_____, lamp L2_____; turn off the switch, lamp L1_____, lamp L2_____.
Features: The switch controls _____ or _____ of two lights at the same time.
⑵Close the switch, lights L1 and L2 are _____ at the same time, and remove one of the lights, what happens is __________.
The reason is: there are only _____ paths in a series circuit, and the lights on the circuit turn on and off _____ each other.
Series connection
A circuit in which circuit elements are connected one by one
Features: There is only one current path in the circuit; if there is a problem somewhere in the circuit, it will affect the entire circuit.
The function of the switch: to control the entire circuit.
in parallel
Parallel circuit: A circuit in which electrical appliances are connected in parallel, with multiple current paths (including main circuits and branch circuits)
2. Characteristics of parallel circuits
Experiment: Connect two electric lamps L1 and L2 to form the circuit shown below.
⑴Close switches S1 and S2. Close the switch S, the lamp L1_____; the lamp L2_____, open the switch S, the lamp L1_____, the lamp L2_____.
Feature 1: The dry circuit switch controls the lights on _______.
⑵Close switch S. When the switch S1 is closed, the light L1_____ is turned off; when the switch S1 is turned off, the light L1_____. When the switch S2 is closed, the light L2_____ is turned off; when the switch S2 is turned off, the light L2_____ is turned on.
Feature 2: The branch switch controls the lights on _____.
⑶Close switches S, S1, S2, lights L1, L2 _____, remove one light, and the other light _____.
Feature 3: The lamps on each branch of the parallel circuit are affected by _______.
Parallel connection
A circuit in which electrical appliances are connected in parallel.
Main circuit: A circuit through which all current flows.
Branch: A circuit through which part of the current flows.
Features: There are multiple current paths in the circuit; each branch does not affect each other.
The function of the dry circuit switch is to control the entire circuit.
The function of the branch switch is to control the branch.
Classroom consolidation
1. There are three electric lamps. I want to connect them in a circuit. It is required that the use or non-use of each electric lamp does not affect the other lamps. They should be connected ( ). (Draw the circuit diagram)
2. If there are two electrical appliances in the circuit, after closing the switch, the two lights will light up at the same time. Which of the following statements is correct ( )
A. The two lights must be connected in series.
B. The two lights must be connected in parallel.
C. The two lights may be connected in series or in parallel.
D. The conditions are insufficient and it is impossible to judge.
knowledge application
Determine what connection method should be used for the following circuits (series or parallel)
(1) The lanterns hung in our house during the Chinese New Year. ( )
(2) Electric lights, televisions, and refrigerators at home. ( )
(3) At night, the lights on the road turn on and off. ( )
(4) Fluorescent lamps in the classroom. ( )
(5) Every machine in the factory workshop must use electricity, and what connection method should be used for them. ( )
Operation
1. If there are three light bulbs, how should the dry cells, switches, and wires be connected to make them light up at the same time? There may be several connection methods. Try to draw your circuit diagram.
2. Discuss whether the fluorescent lamps and fans in the classroom are connected in series or in parallel, and explain the reasons.
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For more information about the "Simple Circuit Assembly Circuit" PPT courseware, please click the Simple Circuit ppt Assembly Circuit ppt tab.
"Assembling Circuits" Simple Circuit PPT Courseware 4:
"Assembling Circuits" Simple Circuit PPT Courseware 4 Project Main Contents Series Circuit Definition Connect the components in the circuit ______. The current flows through the first component and then flows through other components in sequence. Characteristics of the circuit connection method (1) The current is only _ _____The path is dry..
"Assembling Circuits" Simple Circuit PPT Courseware 3:
"Assembling Circuits" Simple Circuit PPT Courseware 3 Question 1 We now have two small light bulbs, a switch, two dry batteries, and several wires. Requirement: The switch controls two lights at the same time. How to connect it? Our task: Connect the circuit as required: 1. Actively discuss and draw actual...
"Assembling Circuits" Simple Circuit PPT Courseware:
"Assembling Circuits" Simple Circuit PPT Courseware Knowledge Review Exercise: Try to draw the corresponding circuit diagram in the box based on the connection conditions of the physical objects in the picture. Observation and thinking Experiment 1: Use the following experimental equipment to assemble a circuit, and use a switch to control two light bulbs at the same time so that...
File Info
Update Time: 2024-09-07
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