CN204242488U - Simple and easy conductor resistance and length relation illustrative circuitry - Google Patents
Simple and easy conductor resistance and length relation illustrative circuitry Download PDFInfo
- Publication number
- CN204242488U CN204242488U CN201420702272.1U CN201420702272U CN204242488U CN 204242488 U CN204242488 U CN 204242488U CN 201420702272 U CN201420702272 U CN 201420702272U CN 204242488 U CN204242488 U CN 204242488U
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- China
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- bulb
- reometer
- conductor resistance
- wire
- iii
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Abstract
The utility model discloses a kind of simple and easy conductor resistance and length relation illustrative circuitry, it is characterized in that, power supply, switch, reometer I, long pencil and bulb I are chained together by wire, the wire between switch with reometer I and being parallel with respectively between the wire between power supply with bulb I connect reometer II, short pencil, bulb II and the reometer III of connecting, bulb III.By above setting, simply, intuitive operation can demonstrate the relation explained between conductor resistance and determinative, phenomenon is obvious, stable, accurate, is convenient to observation of students understand and master, improves learning efficiency for the utility model structure.
Description
Technical field
The utility model relates to a kind of physics teaching circuit, is the illustrative circuitry of a kind of physics teaching in secondary school demonstration conductor resistance and length relation specifically.
Background technology
In physics teaching in secondary school, the not wield part of student about the relation between conductor resistance and determinative, teacher is in the process of explanation, be difficult to the relation between image explanation conductor resistance and determinative, traditional lecture experiment DeGrain, be not easy to observation of students, be difficult to the relation between operation instructions conductor resistance and determinative, be not easy to quantitative test, be not easy to the relation analyzing resistance and length, especially there is no the student of experience of life, textbook conclusion can only be memorize mechanicallyd.
Summary of the invention
The purpose of this utility model is the conductor resistance and the length relation illustrative circuitry that provide a kind of convenient demonstration on physics teaching classroom.
To achieve these goals, power supply of the present utility model, switch, reometer I, long pencil and bulb I are chained together by wire, the wire between switch with reometer I and being parallel with respectively between the wire between power supply with bulb I connect reometer II, short pencil, bulb II and the reometer III of connecting, bulb III.
By above setting, simply, intuitive operation can demonstrate the relation explained between conductor resistance and determinative, phenomenon is obvious, stable, accurate, is convenient to observation of students understand and master, improves learning efficiency for the utility model structure.
Accompanying drawing explanation
Now the utility model is described in further detail by reference to the accompanying drawings.
Fig. 1 is structural representation of the present utility model.
In figure: 1, power supply, 2, switch, 3, reometer I, 4, long pencil, 5, bulb I, 6, reometer II, 7, short pencil, 8, bulb II, 9, reometer III, 10, bulb III.
Embodiment
As shown in Figure 1, power supply 1 of the present utility model, switch 2, reometer I 3, long pencil 4 and bulb I 5 are chained together by wire, the wire between switch 2 with reometer I 3 and being parallel with respectively between the wire between power supply 1 with bulb I 5 connect reometer II 6, short pencil 7, bulb II 8 and the reometer III 9 of connecting, bulb III 10.By above setting, closed switch 2 of the present utility model, observes the brightness of bulb I 5, bulb II 8 and bulb III 10 and the registration of reometer I 3, reometer II 6 and reometer III 9.Can find, the brightness of bulb III 10 is the brightest, and the brightness of bulb II 8 is brighter than bulb I 5, and the registration of reometer III 9 is maximum, and the electric current that reometer II 6 passes through is greater than the electric current that reometer I 3 passes through.By demonstrating with hall, probe into the relation of conductor resistance and length thus, student sees rear very clear, abstract physical principle is resided among simple experiment, reach the effect of getting twice the result with half the effort, thus student is recognized intuitively, and conductor resistance is relevant with length, further research association finds, the resistance of conductor is directly proportional to length, and experiment effect is better.
Claims (1)
1. simple and easy conductor resistance and length relation illustrative circuitry, it is characterized in that: power supply, switch, reometer I, long pencil and bulb I are chained together by wire, the wire between switch with reometer I and being parallel with respectively between the wire between power supply with bulb I connect reometer II, short pencil, bulb II and the reometer III of connecting, bulb III.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420702272.1U CN204242488U (en) | 2014-11-21 | 2014-11-21 | Simple and easy conductor resistance and length relation illustrative circuitry |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420702272.1U CN204242488U (en) | 2014-11-21 | 2014-11-21 | Simple and easy conductor resistance and length relation illustrative circuitry |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204242488U true CN204242488U (en) | 2015-04-01 |
Family
ID=52771952
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420702272.1U Expired - Fee Related CN204242488U (en) | 2014-11-21 | 2014-11-21 | Simple and easy conductor resistance and length relation illustrative circuitry |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204242488U (en) |
-
2014
- 2014-11-21 CN CN201420702272.1U patent/CN204242488U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150401 Termination date: 20151121 |
|
| EXPY | Termination of patent right or utility model |